I have a 99 35th anniversary supercharged convertible. needless to say, my t-5 just blew up, car has 19,000 on it! looking to upgrade to a higher performance trannie (putting more work into the car after this), but not sure what would be a good swap. looked at TKO, TKO2, TKO500/600 tremec 3550, 3650....even thinking about going to 6speed t-56 if it's worth it. this is my first mustang. looking for help from anyone that knows they're late model stangs well. thanx.