i have a set of eibach sportline springs already , and i have the poly isolators also, i have been reading about the steeda x2 ball joint , is that something that i will need for sure. also will i need camber caster plates if so who makes the best one on the market. as far as quality and price is concerned. also i have another quick question. i need to change my bushings on my steering rack , i have poly ones for that also , is that something i can do in driveway. do i have to take off the inner tire rod from the outer tire rod. thanks in advance for the help guys