TIRES:
* 40" tires maximum D.O.T. approved
* NO paddle tires
* NO cutting or grooving
ENGINE:
* Max 600 CID
* Gas or Diesel only. No nitrous, alcohol, or forced induction
* NO Aluminum heads
* NO trans brakes
* Must have single carburetor
* Must run a steady 14" of vacuum/direct manifold vacuum at 1,000 rpm
* Stall converters are allowed: no trans brake
* Ignition up grades are allowed
* No vacuum pumps or canisters
* Open headers allowed
* NO after market fuel injection
* After-market blocks allowed but must be cast iron factory
production deck height & bore spacing
* Must be corporate matching
BODY:
* No body swap
* Stock pick up box to include floor or bed to stock dimensions
* Trimming fenders to accommodate large tires allowed
* Must have drive shaft loops
* Traction bars allowed
* Must have factory transfer case
* Must have factory suspension No four links
(minimum 3 leaf rear)
* Must have factory OEM unmodified frame
* Engine and body must be in factory location
* Axle swaps allowed
* Engine and transmission must be a corporate match
* Bench seat or one (1) bucket seat
* fire extinguisher required