in my old tbird, the trans for that car had a few shift kits avalaible, full valvebodys, but the one plus was on the forum was one of the guys who worked for ford and designed that trans, knew all the flaws and develped his own with no report of any kind of trans failure, one of the things they did to get neck snapping shifts was remove the 1-2 spring entirely as well as drilling the seperator plates. rubber melting shifts with chiropractic care, is that an option for these cars as well, or would not having the 1-2 spring in the fwd transaxle cause more harm than good.