Body parts also must be made of steel materials as on production autos. Legal body styles include cars manufactured by Chevrolet, Dodge, Ford and Pontiac.
Specific models vary as to eligibility.
Total weights are minimums. Carburetion is limited to one 4-barrel carburetor. Fuel capacity maximum is 22 gallons, including fuel cell, filler tube and overflow. Advanced technology, and the resultant increase in speeds, has prompted the events at Daytona Int l Speedway and Talladega Superspeedway to require a special set of technical requirements. Among these are carburetor plates to restrict intake airflow and roof strips to regulate aerodynamics.