Its going in a 1989 chevy C2500 with 1 ton running gear and were going to straight axle conversion it. It is strickly mud use only, its going to run probably 40''+ boggers. I was told I want alot of hp and torq, and it would cost 2x as much to get the numbers from a smallblock than it would a big block. And the weight differnece is only 300lbs.