I have an oppertunity to buy a 2001 mustang GT with 180k miles with automatic tranny. Im a big fan of 5spds but this car is priced right. but im wondering how well the automatics in these cars hold up to horse power gains or bolt on's rather. in the 80's and 90's every mustang 5.0 car I owned with auto's always seemed to crap out on me. just wondering will they tipically hold up as well as a 5spd car and are they waaay slower than a 5 spd GT?