any four cylinder production two wheel drive automobile, no convertible or two seat sports car. Wheelbase must be in accordance with factory body specifications
IF car used is manufactured without full frame, frame must be tied together, with a minimum of 2x3 box tubing between existing rear frame section. no other frame reinforcement allowed.
Roll cage must be four- point design with minimum of three pars per door with racing seat and belts attached to roll cage. roll cage must be constructed of at least 11/2 x.095 tubing and must be x braced behind driver
aluminum bodies allowed
Must have an approved fuel cell. fuel cells must be securely mounted to frame.
Standard or automatic transmissions permitted( triple clutch allowed)
interchanging of rear ends is permitted as long as the stock mounting brackets and stock suspension of the car is attached. stock rear ends may be locked.
tires no wider than 8 inches
car numbers must be 18 in high on ea side of car and top
no alcohol fuel allowed
no rub rails
fire extinguisher with gauge within reach of driver
fire suits required
any disagreement over technical questions or decisions will be resolved by the officials when their decision is rendered it is final.
aluminum after market heads are okay