I heard the 4 bolt ones are the best, but require drilling the 4th hole. I'm gonna get the 3 hole UPR ones, I think the 4 holes are more for auto X than street. I have the UPR bump steer kit. The thing is I should have bought a more complete kit to drop my car. I kept the stock 80k mile shocks and struts, and soon after the drop it started driving funny. First a tie rod end, now a ball joint. I plan on getting replacement parts for lowered cars so I should be OK. My rear is kinda sagging too, but I blame the 50+ launches at the track over the past 2 years on that. I have steeda X2 ball joints and plan on getting some weight jacker adjustable lowers for the rear with poly isolators. If I had it to do over again I would have bought all the junk at once and installed everything. About the bump steer kit, its basicly different tie rod ends with spacers for the ball joint connection. I had no clue what spacers to use, so I don't know if its right or not. I put them on myself and limped to an alignment shop for final adjustments. I really think the 275s up front have a lot to do with my funky front end. O well I'll keep throwing quality parts at it and it should straighten out.
A forum community dedicated to Ford Mustang owners and enthusiasts. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more!