I have a 1976 cj7 with a AMC 304 V8, 3 speed T150 transmission, AMC 20 (4:1) rear end, model 30 front end and 33x12.50 super swampers. The only modifications are a 2.5" suspension lift and a 2" shackle lift (both done by previous owner), new 21 gal fuel tank, electric fuel pump, and a one piece...