1. Tires – Up to 34 inch bar tires or 15.50x35 inch maximum DOT tires.

2. Fuel – Alcohol or gas with single carburetor or fuel injection.

3. Body:
A. Full body truck only with no flat beds.
B. Full firewall & floor pan in cab.

4. Hitch – 34% with 30 inch hitch height.

5. Wheel Base – 15’ from center of rear axle to farthest point forward.

6. Engine:
A. Any engine combination (Ford/Chevrolet) with 485 cubic inch maximum
With 1% variance.
B. Cast iron heads only.
C. Headers must run up through the hood.
D. Motor placement must be 2nd plug from front over center of front axle.

7. Frame – Must run factory frame. Rear axle mounted rigid.

8. No planetary rear ends.

9. Weight – 6,200 lbs.

10. Clutch/Transmission– Any clutch must have S.F.I. approved bellhousing. Automatic transmissions must have S.F.I. approved scatter blanket.

11. No independent rear brakes.

12. Safety:
A. Must have working kill switch
B. Must have driveshaft loops.