I have a transmission for you it comes with no valve body though as I used it in my 904 lol.
Wait that thing has been sitting for 20 years??? Holy guacamole! Its like a barn find in your own garage. Pull that thing out and get her in the road. Or bring her here, my daughter loves her purple darts.
I'm definitely not rich heck I may or may not even have a job... which is why I always try to do things for as little cost as possible.