The 1989 Corvette Challenge Series was a continuation of the 1988 Corvette Challenge Series. Below are some of the specifications that made them unique from stock GM Corvettes.
The 1989 Corvette Challenge cars had a unique option code from the factory, it was “R7F”. The documentation from GM clearly indicates that the cars were produced for the express purpose of racing in the SCCA Corvette Challenge Series. There is also documentation that identifies by serial number, all Corvettes produced with these option codes. Therefore, it is relatively easy to validate the authenticity of any Challenge car.
Each of the twenty nine 1989 Corvette Challenge cars that were converted by Powell were designated strictly for racing. Each car converted had specially installed roll cage, fire system, Challenge car seats, seat belts, brake ducts, exhaust system, oil cooler and Dymag wheels.