Ok every one i have a little problem here. I picked up a r151f turbo trans for my other truck and i dident even think about my t-case fitting up to it. I have a new set of 4.7:1 gears and all new bearings in the 21 spline t case that came off my w56 trans. Is there anyway to make this t-case work on my r151f gearbox? I just really don't want to spend 500 bucks again if i don't have to. I know that the 21 spline wont be as strong but that's fine with me for rite now.