Tire size to be a maximum of 31x10.50x15, D.O.T. regulation, no cut or shaved tires allowed. Cab must be on original front mounts. Dome piston motors allowed hydraulic cam shafts only. Flat top piston motors allowed solid or hydraulic cam shafts. No roller cam shafts allowed 5.
Roller rockers are optional.
NO horizontal holes in carburetor spacer plate. All bolts to be on carburetor and intake must be tight, can remove choke plate. Factory OEM cast iron head only, porting and polishing allowed. NO aftermarket heads allowed. Any battery powered ignition allowed.