I am having trouble finding the info I want so I'll just start a new thread. I have some tranny issue's with my mark and don't want to mess with it. If I am going to pull it out to rebuild it I would justas soon replace it or order one that is already rebuilt. I was wondering what performance auto tranny's you guys were running. I have looked at some from blue oval but haven't really seen anything else other than whats on ebay that i don't trust. I am also considering swapping in a manual tranny. I know that mike has done it with a t45. It was in my garage it happend. I am looking at possibly swapping in a complete 03 cobra drivetrain or getting a tr6060, 3650 or t56. The complete drivetrain probably won't happen because of cost issue's and the wife, but eventually I will have a supercharged mark and want to make the right tranny choice now.