Bob S. Am planning to do the body bushings on my 68 this winter and was wondering if to use the urethane bushings I have or to use the stock rubber ones. Reason I ask is because I did all the suspension last winter using urethane bushings which seemed to stiffen the ride, not complaining, it drives real nice, but wouldn't want it to be any stiffer. Would the urethane ones make it even a harder ride. Any info appreciated. thanks