I finished installing a 4BT in my wife's 77 Chevy 1/2 ton Pick-up. I used the Hyd. Mounts from a Frito-Lay truck. I installed a NP-435 Trans. The truck has 3.08 Gears in the back and I added 16" tires. I just finished installing the Stacks that I made from 4" Driveshaft tube (aluminum). My wife loves the truck. All I need to do now is work on the body.