when i first bought my 93 z 6 speed, all it had was flowy muffler and Cai, my girl , had a 89 notchback, which you already know is only aournd 2975lbs. the lighttest mustang, she had 5 spd, rebuilt engine, pulleys b303 cam. solid motor mounts, hooker comp equal length, exhaust, 373 gearsthats it. we pulled offf and at aobut 20 mph both dumped it. she hung side by side with me tilli hit around 70 or 80mph the i hit 4th and sucked her *** up. no ****, her car pulled like a bat outta hell. she outran 00 stang gt. . but if she still had it . i would eat her up . lol. espically with my new 410;s i love, lol. anyways just another quick sotry for the 2000 something thats already here. something to think about. box shaps for 87-93 stock hp wast only 215 -220hp. cheaper on parts, and notch backs have potential only stang i would ever own. later people