I am just begining my build up of an 81 k10 sub. I lifted the front 3", the rear 4" and will be running 35" tires. My front axle is a 10blt my rear is a 14blt, locked. I've got a 208 with a slip yoke and a th350 trans, behind a 350 eng. that puts out about 335hp. My question is, is my tranny strong enough or should I swap in a th400? I will be abusing this thing off road but no rocks are in its future. I was just wondering because I have heard bad things when comparing a th400 to a th350. Thanks for any input.