Hi all. New to this board and had a quick question. I picked up a slightly used 1972 Lemans Sport with a 350/TH350. So far, I have replaced front brakes, shocks all around, and installed a better radio. I drive this car a lot, and what little rubber suspension bushings that are left are making terrible noises. I am looking at a complete front end kit from PST and wondered if the Polygraphite were better than polyurethane? Any comments on either would be greatly appreciated.