This is great! I have a 85 chevy 4X4 with the 4BT in it. It has the 4 speed with a 3.7 rear end. It has been there for a couple of years now with no problems. It is a total using work truck with out any mercy at all. It is a cattle feed truck, so some of you will understand what I am saying. I hope to build one that I could take better care of.