This Doran JE-4 Daytona Prototype chassis #2 played a pivotal role in establishing Doran’s dominance in the Daytona Prototype class. Doran provided support through spare parts and authorized repair services. Doran’s ongoing support of the JE-4 highlighted their expertise and commitment to Daytona Prototype racing.
At that time the JE-4 was a leading and successful chassis within the Daytona Prototype category. Doran built and supported multiple JE-4 chassis for teams competing in the Grand-Am Rolex Series Daytona Prototype class. The JE-4 was instrumental in Doran’s overall success in the series, helping secure both the team and driver championships in 2003.

The Bell Motorsports team became the 2003 North American Road Racing Champions with this No. 54 Pontiac Doran JE4. Each driver receiving a Rolex Oyster Perpetual Cosmograph Daytona watch, and the Team took home $100,000.00 in prize money, the largest purse ever awarded to a winner in the Grand American Rolex Sports Car Series.
The following January in 2004 during the final hour of the 42nd annual 24 Hours of Daytona, it looked like the Howard-Boss Motorsports No. 2 CITGO Chevrolet Crawford was destined for victory. However, after suffering suspension issues they were forced to conceded to the Bell Motorsports No. 54 Pontiac Doran JE4, driven by Terry Borcheller, Forest Barber, Andy Pilgrim, and Christian Fittipaldi, to take the checkered flag and claim the overall victory.

For 2003 the Grand American Road Racing Association (GARRA) announced that they would stop support of their two premier open cockpit classes, known as SRP-I and SRP-II. The intention was to lower the overall cost of their prototypes, by using closed cockpit chassis made of tube frames, standardizing the level of technology, mandating no development during the season making them stay with the same basic car. The series regulated approved chassis and engine providers. Engines were required to be based on major manufacturer production road car units. The Daytona Prototype was born. Major manufacturers were not allowed to run Daytona Prototype teams.

Six Daytona Prototypes debuted at the Rolex Daytona 24-hour race in 2003, a Doran-Chevrolet, a Fabcar-Toyota, two Fabcar-Porsches, a Picchio-BMW and a Multimatic-Ford. In 2004 with the advent of the banning of the old SRP cars, the Daytona Prototype entries for the Rolex Daytona 24-hour race had grown to 17 cars and continued to grow throughout the season and subsequent seasons.

DP Gen1 (2003)
From 2003 to 2007 seven manufacturers chassis were approved by GARRA:
Chase CCE, Crawford DP03, Doran JE4, Fabcar FDSC/03, Multimatic MDP1, Picchio DP2, Riley MkXI

The engines used from a major production car manufacturer, maintaining the block from production car engine but allowing their displacements to be modified in order to equalize the field.
The following engines were approved by GARRA:
BMW 5.0 L V8, BMW 4.5 L V8, Ford 5.0 L V8, Ford 3.5 L Twin Turbo V6, Infiniti 4.35 L V8, Lexus 5.0 L V8 (can also be branded as Toyota), Porsche 3.99 L Flat-6, Porsche 5.0 L V8 (approved in late 2007), Pontiac 5.0 L V8 (can also be branded as Chevrolet or Cadillac), Honda 3.9 L V6, Honda 3.5 L V6
Each engine also had specific restrictions on what could be modified beyond stock parts, as well as restrictions on intake and exhaust dimensions, RPM, and various technical details.