Close: class rules are, per chassis.
4 Top Fuel Hemis
4 Big block Chrysler’s, supercharged
5 Super Charged Big block fords
5 Super charged Big Block Chevys
3-Allision Aircraft engines or Rolls Royce Merlin in-line air craft engines
2- jet engines.
3- helicopter turbines
Superchargers are limited to 14-71s and engines can make no more than 1000 hp per cylinder or equivalent in rotary or jet engines. Tractor must weigh 7500 pounds or less with driver and full fuel