904 Rebuild for Beginners

i'd say blow apart the old 904 and see what you're working with. it might be trash, it might not but you'll at least have an idea of the inner workings and what you'll need to look for if it is.

and if it's not total garbage, then you've got a trans to install and go along on your way-- FYI though, lock up and non-lock ups take a different torque converter.