Motorhome 727 trans in an A-body?

I definitely have to get rid of the short tail housing and go from there. A friend who is building a nice 70 Dart thinks he may have what I need. The trans shifted great before it was pulled. I will probably use it until it gives me trouble. They are very easy to pull out. After 9 grand in vet bills. The budget doesn't even exist right now. I really do appreciate all the responses I've gotten so far. Thanks so much!