Okay so it sounds like I could at least hang on to my stock 5spd for a bit. When it comes time for a t-56 will it bolt right up? I know I'll have to change crossmembers and get a new driveshaft, but as far as the tunnel goes, will it line up pretty close?
Until then is there a short-throw for my nv? How about a performance clutch?

As far as the best and easiest motor to bolt in, what would you guys recommend? 5.3 or 6.0. Remember my trucks an 06 if that matters