Just Recently Purchased An 1989 Mustang GT Convertible And A Wrecked Gt500 And Want To Swap Motors And I Want To Know If Anyone Has Any Suggestions For A AUTOMATIC TRANSMISSION That’s Will Withstand The Power Of The Motor??
A 6R80 from a current Mustang will bolt up and work fine. Aftermarket is supporting them. A c4 or Powerglide would also work.
The Mustang trans will need the electronics to operate it.