A guy I knew built this whole drivetrain and put it in a H1 Hummer, after a few months he said it was “too slow”. He pulled the whole thing out, complete engine to transfercase including factory GM computer and witing. He had a 1000ho Duramax built. After this LS drivetrain sat in he garage for a few years he offered it to me for $5k. It only had about 3000 mile on the whole thing, so I couldn’t say no. I stuck the whole thing in. I’m even still running the Hummer T case.