1988 700-r4 I used a new case because it is way up dated from the early 700's which were not very strong It is newley rebuilt with a advance adapters output shaft to make it look like the rear of a 350 tranny. It has all new borg warner clutches and band and steels. It has a stage one B&M Shift kit 10 vane oil pump, corvette servo, it is wired to use lock up in a non computerized truck. This is a great tranny to replace your old worn out thm 350 and a great way to get better fuel milage with the overdrive. I am asking 750 or best offer i will ship at buyers expense.