I bought poly bushings for my 67 Dart, haven't driven it yet. The LCA bushings I bought were from Energy Suspension. I had to buy new set of LCA pivot shafts which are larger in diameter ( americanmuscle.biz) to fit the poly bushings. I don't think a lot people know there is a difference when they do the change from rubber to poly, which could be the cause of the problem.
