Wheelbase: OEM wheelbase plus 10 inches (254 mm) maximum or -2 inches (-50 mm) minimum. Maximum wheelbase 125 inches (3175 mm) regardless of OEM wheelbase. Maximum wheelbase variation from left to right is 25 mm (1 inch). Tyres: Racing slicks permitted. Cars quicker than 12.50 seconds (1/4 mile) using independent front suspension and cross-ply rear tyres are not permitted to use radial front tyres. Wheels: Must be automotive-type wheels suitable for street or racing use. Minimum wheel diameter 13 inches (330 mm). Wheel studs must be threaded into hex portion of wheel nut a distance at least equal to the diameter of the stud. Interior: Upholstery, headliners, carpets, dashboard, etc. optional. Must be equipped with one seat minimum for driver, properly installed. Holes, slots, or other openings in floor and/or firewall prohibited. Batteries: Batteries must be securely mounted; may not be located in driver's compartment unless sealed off per ANDRA General Regulations. Data Recorder: Permitted. Speed sensors on any un-driven wheel prohibited. Airfoils/ Wings: Single fixed rear airfoils are permitted on Supercharged/ Turbocharged/ Nitrous Oxide Sedans and derivatives. The airfoil must be securely mounted, and may be no wider than the widest part of the vehicle body. No part of the airfoil may extend past the widest part of the vehicle body, be higher than the highest point of the roof or extend more than 6 inches (152 mm) behind the rear most part of the body, not including bumpers or parachute packs. Maximum surface area, including all non vertical surfaces of structure, of 5484 cmÂ˛ (850 sq inch) Adjustment or movement of any aerodynamic device during a run is prohibited. One spill plate permitted on each side to a maximum of 774 cmÂ˛. (120 sq inch). Body: Any 4, 6 cylinder or Rotary automobile, light truck or 4WD permitted. Mild customizing permitted, but must retain full-size, full-bodied appearance and silhouette, with minimum 2 functional doors. Doors must open and close from inside and outside. OEM glass may be replaced with Polycarbonate or other shatterproof material, minimum thickness 3.0 mm (1/8 inch). Lightweight fibreglass or composite replacement body and/or panels permitted. Body must be full scale (7/8, 3/4 scale, etc. prohibited). ANDRA will monitor body dimensions along with size, shape, and mounting of spoilers and/or wings; final approval rests with ANDRA. Maximum front overhang 45 inches (1143 mm). Spoilers: Factory fitted aerodynamic devices for the body used, fitted in the original location are acceptable. Fabricated rear spoilers to be no longer than 17 inches (432 mm), measured from the body line to spoiler transition point to the tip and must not be moulded into rear deck lid. Must be painted to match paint scheme. Must be no lower than horizontal. Maximum overall height of spill plates 6 inches (152 mm), attached so that a maximum of 3 inches (75 mm) extends above the top of the spoiler. Roof mounted spoilers prohibited. Any adjustment or movement during a run prohibited. Street Equipment: Headlights and taillights may be painted on or adhesive stickers (simulated). Operative tail light required. Tow Vehicles: Only permitted where use of a parachute is required, however, ANDRA may require race vehicle to return to scales under its own power. Licence Requirement: Group 2 UDL as a minimum. Technical Inspection: Required.