Get a rebuilt unit. Unless you have rebuilt alot of these trannys you are going in blind. Listen to people like Benzmac and other technicians who work on these cars from day to day. We arent weekend worriors , just professionals giving advice cause we see it everyday. We work on these cars 5 days a week and run into problems like this everyday. Listen to the pros. get a qualified technician to work on the tranny. Just my 2 cents