The 2003 Grand American Road Racing Championship (Grand Am) was the fourth season of the series. A business model that controlled costs had stable rules, and avoided being dependent on automotive manufacturers attracted many private teams. The previous year, Grand Am announced that the Sportsracing Prototype I cars (expensive and technologically advanced) would not be eligible to compete in the 2003 series and would be replaced by a new sports prototype racer class called a Daytona Prototype.

The Daytona Prototype category was introduced to replace the two existing Sports Racing Prototype groups. The cars use a tube frame chassis rather than the expensive composites used to construct most prototype race cars to control costs. Also, expenses are contained by limiting modifications and implementing rules that were in place for five years. Approved to produce the first generation of Daytona Prototypes for approximately $400,000 were Riley Technologies, Doran Designs, Crawford Race Cars, Fabcar Engineering, Chase Competition Engineering, Picchio, and Multimatic. Costs were also controlled by restricting the engines to production-based motors supplied by Pontiac, Lexus, BMW, Porsche, Ford and Infiniti. Engine displacement was used to determine the weight of a car and whether a five or six-speed transmission could be utilized.

Doran, Picchio, Multimatic and Fabcar delivered cars in time for the 2003 Rolex 24 at Daytona.

The well-established Brumos Racing chose to field two Fabcar FDSC/03 chassis powered by a Porsche engine.

Fabcar Engineering was founded in August 1977 by Dave and Julie Klym. Since then, it has established a worldwide reputation as a top-quality prototype racing design and fabrication shop. The company s first major project was building eleven Wheeler Formula Super Vee race cars. Fabcar s second major endeavor was the construction of two Schkee Can-Am cars. Additional projects included constructing two Fabcar Camel Light cars and the four-rotor Mazda RX-7 GTO cars.

Cegwa Sport, a new team based in Florida founded by Darius Grala, John Shapiro and Luis Amores, campaigned a third FDSC/03 chassis powered by Toyota 4.3-liter V8 engines from Toyota Racing Development.

The Brumos entries are powered by a Porsche flat-six engine. The motor has a displacement of 3,795 cc with a stroke of 76.4 mm and a bore of 99.99 mm. The intake system consists of six individual throttle bodies mated with a sequential multi-point Bosch MS 3.1 system with ignition control. Lubrication of the engine is accomplished using a dry sump with a heat exchanger. The exhaust system is fabricated by Fabcar. The output is rated at 500 horsepower at 8,500 rpm, with 420 Newton-meters of torque at 7,500. The Toyota engine in the Cegwa Fabcar is a 4.3-liter V8. It is a double-overhead camshaft motor with four valves per cylinder. The naturally aspirated fuel-injected engine delivers performance numbers similar to the Porsche.

ENGINEFABCAR
Engine LayoutSix cylinder Boxter
Displacement3598 cc - 76.4 mm stroke, 99.99 mm bore
Horsepower500 horsepower at 8,500 rpm
Torque420 newton-meters of torque at 7,500
Maximum RPM8,500 rpm
CoolingWater cooled
Intake SystemSix individual throttle valves
Fuel InjectionSequential multi-point Bosch MS 3.1 system with ignition control
LubricationDry sump with heat exchanger
Exhaust SystemFABCAR fabricated by FABCAR

The Fabcar FDSC/03 powertrain consists of an EMCO GA 46-P 6-speed sequential transmission standard to cars competing in the Daytona Prototype category. Shifting is achieved by the use of a cable linkage. Bolted to the crankshaft is a custom Tilton / Porsche flywheel. The clutch is a triple plate metallic 5.25 inches in diameter, which is manufactured by Tilton. The clutch is engaged and disengaged using a Tilton aluminum throw-out bearing. The differential is an EMCO limited slip unit. An aluminum fabricated bell housing is used to mate the engine to the transmission to accommodate the different engine options.

POWERTRAINFABCAR
TransmissionEMCO GA 46-P 6 speed sequential
Gear ShiftCable operated
FlywheelTilton/Porsche
ClutchTilton 5-1/4 diameter 3 plate metallic
Throw Out BearingTilton aluminum
DifferentialEMCO limited slip
Bell HousingAluminum fabricated

The front suspension of the Fabcar is an unequal-length double wishbone with pushrod actuated springs and shock absorbers, which are designed and fabricated by Fabcar. Grand Am spec spindles and center lock nuts are required, which were designed and built by Riley and Scott. The rear suspension is a similar configuration with unequal-length double wishbone and pushrod actuated springs and shock absorbers produced by Fabcar. Grand Am spec Riley and Scott spindles and center lock nuts are also used on the rear. Regardless of the manufacturer, all cars are required to use Grand Am s spec Pankel driveshafts and tripod joints. The front roll bars can be adjusted by the driver and the rear by the crew.

SUSPENSIONFABCAR
SteeringCustom Woodward steering rack
Front SuspensionFABCAR designed and fabricated unequal length double wishbone with pushrod actuated springs/shocks, Grand Am spec Riley and Scott spindles and center lock nuts
Rear SuspensionFABCAR designed and fabricated unequal length double wishbone with pushrod actuated springs/shocks, Grand Am spec Riley and Scott spindles and center lock nuts. Grand Am spec Pankel driveshafts and tripod joints
Anti Roll BarsCockpit adjustable front, crew adjustable rear

Stopping the Fabcar FDSC/03 are AP calipers and AP 355 mm rotors with PAGID brake pads. The car is equipped with Fikse three-piece wheels (Front 11.5 inches X 18 inches and Rear 12 inches X 18 inches) and secured using center lock hubs. All teams use the Grand Am spec Hoosier tires (Front 25.5-inches X 11.5-inches 18-inches and Rear 28-inches X 12-inches 18-inches). The 2,125 lbs. The Fabcar has fiberglass bodywork, an overall length of 180 inches, and a width of 79 inches. The car is 42 inches high with a wheelbase of 110 inches.

The 2003 season opened in February with the Rolex 24 at Daytona International Speedway and ended at the same track in November. Between these two weekends, there were events at Homestead-Miami, Phoenix International Raceway, Barber Motorsports Park, California Speedway, Watkins Glen International, Mid-Ohio Sports Car Course, Mont-Tremblant, and Virginia International Raceway. There were a total of twelve events, with the series competing at Watkins Glen twice and Daytona three times.

The 41st Rolex 24 at Daytona took place on the weekend of February 2 and 3. There were a total of 44 starters, six of which were the new Daytona Prototype. Drivers would compete for 24 hours on the 12-turn, 3.56-mile track, which utilized an infield road course and almost the entire tri-oval.

The No. 3 Toyota-powered Fabcar of Darius Grala, Oswaldo Negri, Josh Rehm, and Guy Cosmo retired after catching fire on lap 403. Sharing the driving duties on the No. 58 Brumos Racing entered Fabcar FDSC/03 were David Donohue, Mike Borkowski, Randy Pobst and Chris Bye. After qualifying, the Porsche-powered car was the second fastest and started on the outside of the front row. The team was leading the race but retired when the engine failed at about the six-hour mark. The second Brumos Fabcar was driven by Hurley Haywood, J.C. France, Scott Goodyear and Scott Sharp. The car was gridded third and finished second in class and fifth overall. The category victory went to the Multimatic MDP1 Ford Focus.
The No. 3 Cegwa Sport Fabcar FDSC/03 was sponsored by Ozexe and Motorola. Darius Grala and Guy Cosmo were scheduled to share the car at the Grand Prix Miami; however, issues prevented the pair from starting the race. The team skipped the next three rounds, but Grala and Cosmo were joined by RJ Valentine at the Sahlen s 6 Hours of the Glen. They finished fifth overall and third in class, albeit eight laps behind the winners. After missing Mid-Ohio, Valentine and Cosmo returned for the second Daytona event and grabbed another third in the Daytona Prototype category. Robby Gordon joined Grala and Valentine for the second race at Watkins Glen and finished fifth in class. Grala and Valentine entered the final two rounds and earned fourth and seventh-place results.
David Donohue and Mike Borkowski were the season regulars in the No. 58 Brumos Racing Fabcar FDSC/03, with backing from Red Bull. Their first victory was until race five at California Speedway s road course. The duo captured their next win at Sahlen s 6 Hours of the Glen, with Scott Goodyear sharing the driving duties. The team s final victory came in round ten at the 6 Heures du Circuit Mont-Tremblant, where they were teamed with Porsche driver Sascha Maassen. Borkowski and Donohue finished 2003 with ten podium results, three of which were victories. However, the team s record also included an engine failure at the Rolex 24 and an accident took them out of contention at Virginia International Raceway. Despite this record, they finished tied for second in the final standings.
The No. 59 Brumos Racing Fabcar FDSC/03 was shared by J.C. France and Hurley Haywood, who had been a member of the Brumos team since 1969. France and Haywood won their first race in round two, the Nextel Grand Prix Miami, at Homestead-Miami Speedway. The pair went back-to-back with their second win of the year at Phoenix International Raceway in the AJ s Fine Foods 250. Then, they collected a pair of runner-up results. While their teammates were victorious at Watkins Glen, they retired due to an accident. France and Haywood finished a distant fourth in class on their second visit to Daytona. They ended the season with two runner-up results and a fourth in the finale at Daytona. France and Haywood finished tied for fourth in the final standings.
A fourth Fabcar FDSC/03 was entered in the season finale at Daytona International Speedway. Steve Southard, Duncan Dayton and Chip Vance shared the No. 7 Fabcar during the Grand American Champions Weekend. The BMW-powered (M5 5.0-liter V8) car started sixth overall but retired on lap 62 with a brake issue. The trio was classified twenty-seventh overall and ninth in Daytona Prototype.
The Brumos entries were expected to dominate the season and win the championship. The cars received extensive pre-season testing; however, Terry Borcheller, driving the Bell Motorsports prepared Chevrolet-powered Doran JE-4, won six races and earned the Daytona Prototype Driver s title.

Count Venue No. Driver Car Start Finish
1 Daytona 3 Darius Grala
Josh Rehm
Oswaldo Negri, Jr.
Guy Cosmo
Fabcar FDSC/03 / Toyota 4 25
58 Mike Borkowski
David Donohue
Chris Bye
Randy Pobst
Fabcar FDSC/03 / Porsche 2 34
59 Hurley Haywood
J.C. France
Scott Goodyear
Scott Sharp
Fabcar FDSC/03 / Porsche 3 5
2 Homestead 3 Darius Grala
Guy Cosmo
Fabcar FDSC/03 / Toyota 18 17
58 Mike Borkowski
David Donohue
Fabcar FDSC/03 / Porsche 1 12
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 4 1
3 Phoenix 58 Mike Borkowski
David Donohue
Fabcar FDSC/03 / Porsche 1 5
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 4 1
4 Barber 58 Mike Borkowski
David Donohue
Fabcar FDSC/03 / Porsche 1 7
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 3 2
5 Fontana 58 Mike Borkowski
David Donohue
Fabcar FDSC/03 / Porsche 2 1
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 5 2
6 Watkins Glen 3 Darius Grala
Guy Cosmo
R.J. Valentine
Fabcar FDSC/03 / Toyota 5 5
58 Mike Borkowski
David Donohue
Scott Goodyear
Fabcar FDSC/03 / Porsche 2 1
59 Hurley Haywood
J.C. France
Chris Dyson
Fabcar FDSC/03 / Porsche 1 13
7 Mid-Ohio 58 Mike Borkowski
David Donohue
Fabcar FDSC/03 / Porsche 2 2
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 4 4
8 Daytona 3 Guy Cosmo
R.J. Valentine
Fabcar FDSC/03 / Toyota 13 9
58 Mike Borkowski
David Donohue
Fabcar FDSC/03 / Porsche 2 3
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 5 20
9 Watkins Glen 3 Darius Grala
R.J. Valentine
Robby Gordon
Fabcar FDSC/03 / Toyota 9 6
58 Mike Borkowski
David Donohue
Fabcar FDSC/03 / Porsche 2 2
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 5 4
10 Mont-Tremblant 58 Mike Borkowski
David Donohue
Sascha Maassen
Fabcar FDSC/03 / Porsche 1 1
59 Hurley Haywood
J.C. France
Max Papis
Fabcar FDSC/03 / Porsche 6 2
11 VIR 3 Darius Grala
R.J. Valentine
Fabcar FDSC/03 / Toyota 6 4
58 Mike Borkowski
David Donohue
Fabcar FDSC/03 / Porsche 2 17
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 7 2
12 Daytona 3 Darius Grala
R.J. Valentine
Fabcar FDSC/03 / Toyota 14 22
7 Duncan Dayton
Steve Southard
Chip Vance
Fabcar FDSC/03 / BMW 6 27
58 Mike Borkowski
David Donohue
Fabcar FDSC/03 / Porsche 5 3
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 9 4

2004 was the fifth season of the series. A business model that controlled costs had stable rules, and avoided being dependent on automotive manufacturers attracted many private teams. Despite the critics' reservations, entries continued to grow and showed no signs of slowing down.

As in the past, the season opened in February with the Rolex 24 at Daytona International Speedway and ended at California Speedway. Between these two venues, there were events at Homestead-Miami Speedway, Mont-Tremblant, Watkins Glen International, Barber Motorsports Park, Mid-Ohio Sports Car Course, Phoenix International Raceway, and Virginia International Raceway. There were a total of twelve events, with the series competing at Daytona, Watkins Glen, and Homestead-Miami twice.

The 42nd Rolex 24 at Daytona took place on the weekend of January 31 and February 1. There were a total of 53 starters. Last year, six Daytona Prototypes were entered in the class's inaugural season; in 2024, that number grew to seventeen. Drivers would compete for 24 hours on the 12-turn, 3.56-mile track, which utilized an infield road course and almost the entire tri-oval.

Two new manufacturers joined the series, Crawford Race Cars and Riley Technologies. The Crawford DP03 debuted at the Rolex 24 with three entries. Two Riley MkXI made their first start at Daytona.

Four Fabcar FDSC/03 were entered in round one. The field included the two Porsche-powered Brumos entries, the Southard Motorsports BMW and Gunnar Racing's new Fabcar, which used a Porsche engine. The fastest of the four cars was the No. 58 Brumos shared by David Donohue, Darren Law, Sascha Maassen and Lucas Luhr; however, they were the first Fabcar to retire with an electrical problem. Hurley Haywood, J.C. France, Scott Sharp and Tommy Riggins drove the second Brumos entry. They qualified ninth, but their race ended early with a chassis issue. Southard Motorsports started immediately behind the No. 59 Brumos Fabcar with drivers Shane Lewis, Jack Baldwin, George Robinson, Vice Race and Steve Southard. The team finished fortieth overall and was the top Fabcar but retired on lap 359 with an engine failure. The remaining FDSC/03 was piloted by Gunnar Jeannette, Kyle Petty, Paul Newman, and Mike Brockman and finished forty-eighth with a motor issue.
The next round was held at Homestead-Miami Speedway. Darren Law joined David Donohue in the No. 58 Brumos Fabcar, replacing Mike Borkowski. They had issues in race two and finished sixteenth in Daytona Prototype. Donohue and Law continued to have a challenging season. Their best qualifying result was a third at Mont-Tremblant with Sascha Maassen - they would finish in the eighth spot. In addition to Daytona and Homestead-Miami, Donohue and Law had top-ten qualifying efforts at Watkins Glen, Mid-Ohio, Virginia, Barber and California. The team's best result was a fourth at Mid-Ohio, followed by a fifth place at Daytona's Paul Reverse 250. Donohue and Law ended the season tied for fourteenth in the final Driver's standings.
J.C. France and Hurley Haywood returned as the No. 59 Brumos Racing Fabcar FDSC/03 drivers. The Rolex 24 was a disaster for the teams campaigning the Fabcar chassis. However, France and Haywood recovered from their season opener retirement to finish fourth in Homestead-Miami after qualifying eleventh. This would mark their best result of 2004. The year included top ten finishes at Phoenix, Watkins Glen with Lucas Luhr, Mid-Ohio, Barber and California. At the opposite end of the results sheet was Mont-Tremblant, where they finished thirty-first, with Lucas Luhr, and twenty-seventh at Virginia. Their best start was a fifth at the Rolex 24, and the worst was at Virginia when the pair started in the sixteenth position. France and Haywood ended the year tied for thirteenth in the Daytona Prototype Driver's Championship. They finished one point ahead of their teammates, Donohue and Law.
Steve Southard's Southard Motorsports entered all twelve rounds like the Brumos team. Shane Lewis was the team's primary Driver. Southard also used the services of Jack Baldwin and Vice Rice for the shorter events. Southard and George Robinson were added to the line-up at longer races such as the Rolex 24, Mont-Tremblant and Watkins Glen. The first full year was challenging for the No. 7 BMW-powered Fabcar. However, the team's highlights were ninth-place finishes at Homestead-Miami with Lewis and Baldwin and Virginia with Lewis and Rice. Unfortunately, the team's record also included four events they could not finish. The team's best starting position was an eighth place at Homestead-Miami with Lewis and Baldwin. Lewis finished fifteenth in the Driver's points chase.
Two additional teams campaigning the Fabcar FDSC/03 entered selected rounds. The first was Gunnar Racing, which only participated in the Rolex 24. After starting in the fourteenth position, the team retired and was classified with a forty-eighth overall and fifteenth among the Daytona Prototype competitors.
The second team that returned in 2003 was Cegwa Sport. Darius Grala and John Lloyd made their first start of the year in the No. 3 Lexus-powered Fabcar at Phoenix, where they qualified eighteenth overall and finished tenth in the Daytona Prototype category. The team's second and last event was Mont-Tremblant, where Grala and Lloyd were joined by last year's winner, Mike Borkowski. Despite an accident near the end of the contest, they finished fourteenth overall after qualifying sixteenth.

Except for the Doran JE-4, which grabbed victories at the Rolex 24 with last year's championship-winning Bell Motorsports, and at the Sahlen's 200 at Watkins Glen with the Doran Lista Racing, the win column was dominated by the latest creations from Crawford Race Cars and Riley Technologies. The Crawford DP03 earned wins at both Homestead-Miami events with Milka Duno and Andy Wallace. Butch Leitzinger and Elliott Forbes-Robinson claimed first place at Barber Motorsports Park. The Riley MkXI won three races for Wayne Taylor and Max Angelelli. Max Papis and Scott Pruett collected four victories and earned the Driver's Championship.

Count Venue No. Driver Car Start Finish
1 Daytona 7 Shane Lewis
Jack Baldwin
George Robinson
Vic Rice
Steve Southard
Fabcar FDSC/03 / BMW 10 40
45 Gunnar Jeannette
Kyle Petty
Paul Newman
Mike Brockman
Fabcar FDSC/03 / Porsche 14 48
58 Sascha Maassen
David Donohue
Darren Law
Lucas Luhr
Fabcar FDSC/03 / Porsche 5 50
59 Hurley Haywood
J.C. France
Tommy Riggins
Scott Sharp
Fabcar FDSC/03 / Porsche 9 41
2 Homestead 7 Shane Lewis
Jack Baldwin
Fabcar FDSC/03 / BMW 8 9
58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 4 40
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 11 4
3 Phoenix 3 John Lloyd
Darius Grala
Fabcar FDSC/03 / Lexus 18 12
7 Shane Lewis
Jack Baldwin
Fabcar FDSC/03 / BMW 9 36
58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 16 35
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 11 9
4 Mont-Tremblant 3 John Lloyd
Darius Grala
Mike Borkowski
Fabcar FDSC/03 / Lexus 16 14
7 Shane Lewis
Vic Rice
Steve Southard
Fabcar FDSC/03 / BMW 13 32
58 Darren Law
David Donohue
Sascha Maassen
Fabcar FDSC/03 / Porsche 3 8
59 Hurley Haywood
J.C. France
Lucas Luhr
Fabcar FDSC/03 / Porsche 6 31
5 Watkins Glen 7 Shane Lewis
Vic Rice
Steve Southard
Fabcar FDSC/03 / BMW 14 44
58 Darren Law
David Donohue
Sascha Maassen
Fabcar FDSC/03 / Porsche 4 6
59 Hurley Haywood
J.C. France
Lucas Luhr
Fabcar FDSC/03 / Porsche 9 10
6 Daytona 7 Shane Lewis
Vic Rice
Fabcar FDSC/03 / BMW 16 23
58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 2 5
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 10 14
7 Mid-Ohio 7 Shane Lewis
Vic Rice
Fabcar FDSC/03 / BMW 13 12
58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 6 4
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 14 9
8 Watkins Glen 7 Shane Lewis
Vic Rice
Fabcar FDSC/03 / BMW 13 13
58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 11 7
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 10 19
9 Homestead 7 Shane Lewis
Vic Rice
Fabcar FDSC/03 / BMW 13 26
58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 8 32
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 11 12
10 VIR 7 Shane Lewis
Vic Rice
Fabcar FDSC/03 / BMW 14 9
58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 5 20
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 16 27
11 Barber 7 Shane Lewis
Vic Rice
Fabcar FDSC/03 / BMW 15 20
58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 6 7
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 13 10
12 Fontana 7 Shane Lewis
Vic Rice
Fabcar FDSC/03 / BMW 13 11
58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 9 28
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 12 8

The 2005 Grand American Road Racing Championship (Grand Am) was the series' sixth season. A business model that controlled costs had stable rules and avoided being dependent on automotive manufacturers had proven to be a success. 

In the new year, there were just two classes—Daytona Prototype and Grand Touring. Despite the reduction in categories, the Rolex 24 entries increased from 53 last season to 62 this year.

The season opened in February with the Rolex 24 at Daytona International Speedway and ended in Mexico at Autodromo Hermanos Rodriguez. Between these two venues, there were events at Homestead-Miami, California Speedway, Mazda Raceway Laguna Seca, Mont-Tremblant, Watkins Glen International, Barber Motorsports Park, Mid-Ohio, Phoenix International Raceway, and Virginia International Raceway. There were a total of fourteen events, with the series competing at Daytona twice and Watkins Glen three times.

By 2005, most teams had abandoned the Daytona Prototypes they entered in the first year of the series in favour of the Crawford DP03 and Riley MkXI.

Four Fabcar FDSC/03 were in this year's Rolex 24 field. Three of the cars were out of the Brumos Racing stable. The No. 29 Fabcar was driven by Josh Vargo, Tim Vargo, Jake Vargo and Brady Refenning. Series regulars David Donohue and Darren Law shared the No. 58 car with Lucas Luhr and Sascha Maassen. The No. 59 Fabcar was piloted by the team's primary drivers, J.C. France and Hurley Haywood, along with Porsche drivers, Mike Rockenfeller, Timo Bernhard, and Romain Dumas. The last Fabcar entry was a combined effort from Cegwa Sport and Southard Motorsports. The drivers included Darius Grala, Mark Patterson, Bohdan Kroczek, Quentin Wahl, and Shane Lewis. The No. 58 finished eighth, which was the best Fabcar result. The Cegwa / Southard car finished fourteenth in class. The remaining two Fabcars retired.
After Daytona, only the Brumos team committed to the full season. Donohue and Law in the No. 58 Fabcar had a season-high finish of sixth at Barber and their best starting position was the pole in round two at Homestead-Miami. The year's low point was a thirty-ninth overall result at Watkins Glen, where they retired after an accident. The highlight for Haywood and France was a tenth at Phoenix. Their worst finish was a forty-four overall in the Rolex 24. At the final Watkins Glen event, Haywood and France had their best starting position – a ninth. In the year-end standings, Donohue and Law finished tied for twenty-sixth. France and Haywood were twenty-sixth in the Driver's Championship.

The Suntrust duo of Max Angelelli and team owner Wayne Taylor secured the 2005 Daytona Prototype Driver’s Championship.

Count Venue No. Driver Car Start Finish
1 Daytona 3 Mark Patterson
Darius Grala
Bohdan Kroczek
Quentin Wahl
Shane Lewis
Fabcar FDSC/03 / Lexus 23 23
29 Josh Vargo
Tim Vargo
Jake Vargo
Brady Refenning
Fabcar FDSC/03 / Porsche 22 43
58 Sascha Maassen
David Donohue
Darren Law
Lucas Luhr
Fabcar FDSC/03 / Porsche 14 8
59 Hurley Haywood
J.C. France
Mike Rockenfeller
Timo Bernhard
Romain Dumas
Fabcar FDSC/03 / Porsche 27 44
2 Homestead 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 1 8
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 13 14
3 Fontana 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 17 9
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 18 15
4 Laguna Seca 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 12 14
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 18 21
5 Mont-Tremblant 58 Darren Law
David Donohue
Sascha Maassen
Fabcar FDSC/03 / Porsche 9 7
59 Hurley Haywood
J.C. France
Lucas Luhr
Fabcar FDSC/03 / Porsche 10 12
6 Watkins Glen 58 Darren Law
David Donohue
Lucas Luhr
Fabcar FDSC/03 / Porsche 14 39
59 Hurley Haywood
J.C. France
Timo Bernhard
Fabcar FDSC/03 / Porsche 13 22
7 Daytona 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 22 7
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 10 11
8 Barber 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 12 6
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 14 23
9 Watkins Glen 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 16 8
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 15 15
10 Mid-Ohio 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 7 38
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 10 15
11 Phoenix 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 15 8
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 17 10
12 Watkins Glen 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 6 31
59 Hurley Haywood
J.C. France
David Donohue
Fabcar FDSC/03 / Porsche 9 12
13 VIR 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 9 35
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 14 28
14 Mexico City 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 10 16
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 19 17

The 2006 Grand Am championship was the seventh year. As in the past, the season opened in January with the Rolex 24 at Daytona International Speedway and ended in Utah at Miller Motorsports Park. In between these two venues, there were events at Autodromo Hermanos Rodriguez, Homestead-Miami Speedway, Long Beach, Mazda Raceway Laguna Seca, Lime Rock Park, Watkins Glen International, Barber Motorsports Park, Mid-Ohio, Virginia International Raceway, Phoenix International Raceway and Infineon Raceway. There were fifteen events, and the series competed at Daytona and Watkins Glen twice.

This season, Brumos Racing was the only team campaigning the Fabcar FDSC/03; however, before the end of the year, they would abandon the marque in favour of the Riley MkXI. The team continued to have limited success with the Fabcar. Donohue and Law had a season-high finish in the Rolex 24, fourth place with Sascha Maassen. An eleventh at the Mid-Ohio Sports Car Course was the best result for France and Haywood.
Donohue and Law started racing the Riley in round twelve at Watkins Glen International, where they qualified thirteenth and finished sixth. France and Haywood made the change to the Riley in the next race at Sonoma.

The 2006 season ended with the Brumos duo of Darren Law and David Donohue being tied with Mario Haberfeld for sixteenth in the Driver’s standings. While Hurley Haywood finished thirty-second in the points, his teammate, J.C. France, was thirty-sixth after missing the Homestead-Miami event. The Daytona Prototype Driver’s crown went to Jorg Bergmeister driving the Krohn Racing Riley MkXI / Pontiac.

Count Venue No. Driver Car Start Finish
1 Daytona 58 Sascha Maassen
David Donohue
Darren Law
Fabcar FDSC/03 / Porsche 29 4
59 Hurley Haywood
J.C. France
Ted Christopher
Joao Barbosa
Fabcar FDSC/03 / Porsche 10 36
2 Mexico 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 10 15
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 11 34
3 Homestead-Miami 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 3 10
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 14 12
4 Long Beach 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 21 14
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 11 15
5 VIR 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 8 12
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 17 16
6 Laguna Seca 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 22 5
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 18 18
7 Phoenix 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 22 12
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 15 18
8 Watkins Glen 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 11 17
59 Hurley Haywood
J.C. France
Ted Christopher
Fabcar FDSC/03 / Porsche 19 40
9 Mid-Ohio 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 10 8
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 18 11
10 Daytona 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 12 12
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 20 19
11 Barber 58 Darren Law
David Donohue
Fabcar FDSC/03 / Porsche 14 13
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 17 16
12 Watkins Glen 58 Darren Law
David Donohue
Riley MkXI / Porsche 13 6
59 Hurley Haywood
J.C. France
Fabcar FDSC/03 / Porsche 26 15
13 Sonoma 58 Darren Law
David Donohue
Riley MkXI / Porsche 8 8
59 Hurley Haywood
J.C. France
Riley MkXI / Porsche 23 19
14 MMP 58 Darren Law
David Donohue
Buddy Rice
Riley MkXI / Porsche 12 7
59 Hurley Haywood
J.C. France
Roberto Moreno
Riley MkXI / Porsche 21 36

The 2007 Grand Am series was in its eighth year. As in the past, the season opened in January with the Rolex 24 at Daytona International Speedway and ended in Utah at Miller Motorsports Park. In between these two venues, there were events held at Autodromo Hermanos Rodriguez, Homestead-Miami Speedway, Mazda Raceway Laguna Seca, Lime Rock Park, Watkins Glen, Barber Motorsports Park, Mid-Ohio, Virginia International Raceway, Montreal, Iowa and Infineon Raceway. Montreal and Iowa were new for this season and gone from the schedule were Long Beach and Phoenix International Raceway. Fourteen events, with the series competing at Daytona and Watkins Glen twice.

With Brumos Racing out of the picture, VICI Racing, Cheever Racing, and Spirit of Daytona were campaigning the Fabcar FDSC/03.

The American and German-based VICI Racing entered the No. 18 Porsche-powered Fabcar FDSC/03 at the Rolex. This would been the team's only Grand Am event of 2007. The driver line-up included Uwe Alzen, Robert Renauer, Terry Borcheller and Gaston Mazzacane. Despite some talent in their roster, they could not overcome the weaknesses of the Fabcar. They were gridded twentieth out of twenty-eight Daytona Prototypes and retired with a fifty-eighth place result.
  Cheever Racing drivers Mike Newton, Thomas Erdos, Harrison Brix and Eddie Cheever shared the No. 51 Porsche powered Fabcar FDSC/03. The car was running at the conclusion of twenty-four hours but was eighty-nine laps behind the winner and in thirty-second overall when the checkered flag flew.
Cheever Racing completed the remainder of the season with the No. 39 Crown Royal Special Reserve-sponsored Fabcar. The primary drivers were Christian Fittipaldi and Harrison Brix. Cheever shared the driving in round two at Mexico; unfortunately, after starting in the fifth position, an accident removed the trio from the race – they were classified in thirty-fifth place. Fittipaldi and Brix qualified sixth at Homestead-Miami but finished fourteenth. More often than not, the pair were fast in qualifying but finished well behind their starting position. At Watkins Glen, the third driver was Antonio Garcia, and they finished eighteenth. At Mid-Ohio, they started on the outside of the front row but finished one lap behind the leaders in the eighth position.
The team made a significant chance before round nine at Daytona. The Porsche engine was replaced with a Pontiac motor. The 5.5-liter LS6 V8 is a two-valve per-cylinder pushrod engine, which was limited to 7,000 rpm. Unfortunately, the engine failed after sixty-one laps. The team retired at the next event in Iowa. At Barber, it was another great qualifying effort followed by a disappointing result. The team had their best performance of the season in Canada. Garcia joined Fittipaldi, and they finished fourth. The year ended at Miller. Richard Antinucci joined Fittipaldi and Brix. They were gridded seventh but crossed the finish line in thirteenth.
The second Fabcar at the final event was the Porsche-powered Spirit of Daytona Racing entry shared by Marc-Antoine Camirand, Doug Goad, and Guy Cosmo; they finished fifteenth.

The 2007 Daytona Prototype Driver's title went to the Gainsco duo of Jon Fogarty and Alex Gurney. Christian Fittipaldi was the only Fabcar driver to make it the top-twenty-five of the points chase and finished seventeenth.

Count Venue No. Driver Car Start Finish
1 Daytona 51 Mike Newton
Thomas Erdos
Harrison Brix
Eddie Cheever, Jr.
Fabcar FDSC/03 / Porsche 19 32
18 Uwe Alzen
Robert Renauer
Terry Borcheller
Gaston Mazzacane
Fabcar FDSC/03 / Porsche 20 58
2 Mexico 39 Christian Fittipaldi
Harrison Brix
Eddie Cheever, Jr.
Fabcar FDSC/03 / Porsche 10 15
3 Homestead-Miami 39 Christian Fittipaldi
Harrison Brix
Fabcar FDSC/03 / Porsche 6 14
4 VIR 39 Christian Fittipaldi
Harrison Brix
Fabcar FDSC/03 / Porsche 12 15
5 Laguna Seca 39 Christian Fittipaldi
Harrison Brix
Fabcar FDSC/03 / Porsche 4 11
6 Watkins Glen 39 Christian Fittipaldi
Harrison Brix
Antonio Garcia
Fabcar FDSC/03 / Porsche 19 18
7 Mid-Ohio 39 Christian Fittipaldi
Harrison Brix
Fabcar FDSC/03 / Porsche 2 8
8 Daytona 39 Christian Fittipaldi
Harrison Brix
Fabcar FDSC/03 / Pontiac 12 33
9 Iowa 39 Christian Fittipaldi
Harrison Brix
Fabcar FDSC/03 / Pontiac 15 14
10 Barber 39 Christian Fittipaldi
Harrison Brix
Fabcar FDSC/03 / Pontiac 6 11
11 Montreal 39 Christian Fittipaldi
Antonio Garcia
Fabcar FDSC/03 / Pontiac 8 4
12 Watkins Glen 39 Christian Fittipaldi
Antonio Garcia
Fabcar FDSC/03 / Pontiac 5 7
13 Sonoma 39 Christian Fittipaldi
Harrison Brix
Fabcar FDSC/03 / Pontiac 13 6
14 MMP 39 Christian Fittipaldi
Harrison Brix
Richard Antinucci
Fabcar FDSC/03 / Pontiac 7 13
09 Marc-Antoine Camirand
Doug Goad
Guy Cosmo
Fabcar FDSC/03 / Porsche 17 15

The five-year period from 2003 to 2007, which restricted chassis development and prevented new manufacturers from joining the series, concluded. As a result, a new generation of Daytona Prototypes was constructed—among them were Dallara, Lola, and new cars from Crawford and Riley.

In September 2007, Eddie Cheever purchased the Daytona Prototype license from Fabcar and established a technical partnership with Picchio, a Gen 1 Daytona Prototype constructor. The new chassis was built by Cheever Racing in Indianapolis, Indiana. With AJ Foyt's permission, the car was called the Coyote CC/08 and used a Pontiac engine. The Coyote-Foyt chassis name was used from 1966 to 1983 for Foyt's USAC Championship cars.

The last time the Fabcar FDSC/03 appeared on a Grand-Am entry list was the 2008 Rolex 24 at Daytona International Speedway with the Spirit of Daytona Racing. Drivers Marc-Antoine Camirand, Michael McDowell and Guy Cosmo finished fifteenth after starting twenty-second.

Cheever Racing made an inauspicious start at the Rolex 24, with the team's two entries failing to finish. The Spirit of Daytona Racing returned to the series with a Porsche-powered Coyote chassis but did not compete in all events. Their best result was in the Brumos Porsche 250 at Daytona when drivers Marc-Antoine Camirand and Guy Cosmo finished tenth. The highlight for Cheever Racing was at Montreal when drivers Antonio Garcia and Christian Fittipaldi qualified ninth fastest and captured a runner-up result.
The Riley MkXX won the Manufactures Championship with thirteen victories. Dallara DP01 was the only other chassis to collect a first place and finished second in the points chase. Of the sixth chassis manufacturers, Coyote CC/08 was fourth.

From 2009 to 2011 the Spirit of Daytona Racing continued to campaign the Coyote chassis.

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