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Body: Convertibles of sedan models are acceptable but must compete with the hood up. All competitors utilising a utility (ute) type body configuration must ensure that the tailgate where fitted remains closed during competition. Left or right hand drive permitted. Any body produced by an automobile manufacturer is acceptable. Fibreglass replica bodies permitted. The replacement of removable panels with fibreglass or other materials is permitted. Sedans, panel vans, utilities, etc. are permitted. With the exception of 1948 and earlier traditional hot rod type vehicles, no external panels such as bonnet or fenders may be removed Moveable aerodynamic devices will not be permitted under any circumstances. Chassis: Cars quicker than 6.50 must meet Top Doorslammer regulations or SFI 25.1D as minimum. All of the chassis frame may be replaced. Any properly reinforced frame accepted. Additional members may be added for strength and/or roll cage installation. Doors: A minimum of two operative doors required that permit entry from both sides. Seats: Driver’s seat only required
Wheelbase: Wheelbase alterations are acceptable. Cars from 79 inches (2006mm) - 89 inches (2260mm) are restricted to a maximum of blown sixes and fours up to 250 cubic inch capacity, or single four barrel V8’s to 310 cubic inches. Such cars must have full roll cage and wheelie bars. There are no restrictions on vehicles above 89 inches (2260.6mm). Wheelbase variation from left to right, maximum of 1 inch (25mm) Suspension: All rules pertaining to Gas class suspension are relevant to these classes, except that rear suspension is optional. Refer General Regulations “4.10.4 Suspension”. Transmission: Any type of transmission may be used. Rear Hubs: All supercharged sedans quicker than 7.50 seconds (1/4 mile) / 4.90 seconds (1/8 mile) are required to use fully floating rear hubs. Refer General Regulations 4.9.9 except for vehicles weighing 2500lbs or less, that are alternatively permitted to use aftermarket 40-spline two piece axles. Auto Trans/Converters: Refer General Regulations “Drivetrain”. Clutch: Refer General Regulations “Clutch”. Flywheel: Refer General Regulations “Flywheel” & “Flywheel Shields / Bellhousing” . Rear Axle: Any production automobile rear axle assembly permitted. Track may be narrowed. Spool may be fitted. Refer General Regulations “Rear Axle”. Brakes: Four wheel hydraulic brakes required as minimum. Refer General Regulations “Brakes” . Licence Requirements: Group Two UDL as minimum. Night Lighting: Required.
CLASS REGULATIONS
Windshield and Windows: Must be in good condition. Do not need to be operative. Polycarbonate of a minimum of 3mm (1/8 inch) thickness may be used in any window to replace original glass. All non-operative windows must be permanently closed. Other than factory tint, front windscreens must be clear on all vehicles.
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