I need a trans for my 94 F-250, pretty sure its the E40D. Mostly what I fine says case only. I'm thinking that meane something that I don't have a clue on. What does case only mean? It's empty no guts? No converter? I've taken them out and replaced the O-ring at the front but all I had to do was put back what I took out, I can do that getting pieces from 10 different places to put together will probably not help me. I'm a carpenter but I can turn a wrench as long as I know what's wrong, most of the time.