yep, you have to find a dealership that will install and honor your warrenty, and make sure you get it in writting. I know some dealerships will do it but others are just jerks about it, but ford racing is a good gear to get, most people here have them. including me, damn I wish I had gotten 4.30's.
so ford gears are ok they arent crap, if they do void the warranty then what are some other good gears?I only was looking into ford racing parts because I figured if it was a ford part and I had ford install it wouldnt void the warranty
call your local dealer, dont give them your name or nothing but ask if they install gears and if so will it void your warrenty. if they say yes and you are still set on gears I would either get ford or richmond gears. I am sure there are more out there.
Ford gears, richmond street(not race) or motive gears are all good but most people get the ford set. Check www.mustangtuning.com he had a good deal on motive gears.