guys, rubber is rubber. While the rubber used in the itr bushings may in fact be harder and stiffer than stock bushings in the non-R's......its still rubber and in no way will be close to the stiffness of a polyurethane bushing.kelly on Sep/03/02 said:I agree with dragontegz. Polyurethane bushings used in this application squeak too much - go with ITR ones. Your stock end links and the rubber bushings that go in the end of the bar will work, but the ITR ones are stiffer. I would go ITR on these as well. This is what I did.