It all depends on what transmission you are going to. Driveshaft, crossmember, linkage/hydrolics, speedometer, pedals, tunnel, flywheel, clutch, shifter hole, are all things I had to mess with for a T-56 6-speed. On the other hand, with a muncie you may not have to do much since parts are readily available. What auto you have and what manual you want would be good info to post.