I'd plan on a car that falls in the Pioneer Era....
Technology Eras for Cars, Trucks, SUVs, and UTVs NORRA has introduced the concept of “Technology Eras”. An Overall Trophy will be awarded for the lowest overall time in each Era. The Eras are roughly defined by the technology that was available in that era, rather than by specific build dates. The Era technology restrictions are primarily focused upon chassis, suspension, and transmission technology. Era specific engine technology restrictions are in place in some categories and may be implemented in additional categories in the future. The NORRA Eras are: Pioneer Era (1967 - 1975) o Characterized by early Burros and original Stroppeso 2” shocks, 33” max tire size, swing axle buggies.
Pioneer Era (1967 - 1975) Characterized by early Burros and original Stroppeso 2” shocks, 33” max tire size, swing axle buggies.
PIONEER Era (1967 - 1975) Pioneer Buggy category
VW Type 1 engines only (any displacement), no fuel injection
VW Swing axle transaxles only o Stock VW front / rear suspension
100” max wheelbase
33” max tire diameter
2” max shock diameter, no coilovers, no bypasses
Pioneer Cars category
Cars conforming to Pioneer Era limitations
***EDIT*** Hmmmm.... says Pioneer cars MUST be carburated. Don't like that.
So there's also...
11.11 Vintage Open Production Cars- This is a vintage category for production based passenger vehicles (sedans, coupes, and convertibles). Trucks and SUVs are not permitted in this category. Vehicles in this category must be at least 20 years old. Fenders are required for all four wheels. Maximum tire size is 37” Vehicles in this category must be readily recognizable as the vehicle upon which it is based, at the discretion of NORRA. This is a home for the original Class 6. The Open Production Car category is for vehicles that are heavily modified for example a vehicle that is a space frame racecar with a production appearing body. The determination of this is left to NORRA officials and will be based upon past performance or speed potential in NORRA’s opinion.
11.12 Vintage Stock Production Cars- This is a vintage category for production based passenger vehicles (sedans, coupes, and convertibles). Trucks and SUVs are not permitted in this category. Vehicles in this category must be at least 20 years old. Fenders are required for all four wheels. Maximum tire size is 37” Vehicles in this category must be readily recognizable as the vehicle upon which it is based, at the discretion of NORRA. This is a home for the original Class 6. The Stock Production Car category is for cars that are largely based on mildly modified production cars and retain most of the car’s chassis and body.