The X2 balljoint fits 94-03 Mustangs. It also fits 87-93 Mustangs that are equipped with the Ford Racing M-2300-K Cobra Brake conversion kit or Baer 13" or 12 " American Sedan Brake kits. It will not work with stock 87-93 brakes
because of interference between the rotor and the repositioned control arm.
From the Steeda website.
Hope this helps.
you cant use the steeda x2 balljoints with a stock brake setup because they are too tall. you need to go with a bigger aftermarket brake setup (M2300K OR BAER) so that you caliper is moved up out of the way. i run a baer setup and am currently using the x2 and bumpsteer kit. my steering is awesome with the two combined with a flaming river rack/shaft, MM alluminum rack bushings and urethane evrywhere else in the front end. oh yeah get yourself some bad ass springs/ struts (i run steeda superlights with MM coilover bilsteins) and you will be amazed how well your car is able to perform. . let me know if you need anymore specifics... but with stock brakes the anwser is no... get yourself at least a kit with 13' rotors and you'll be in PHAT CITY