Wow what an improvement over the old worn out oil filled bushings! As I drove down the road, I felt the rear end twitch. There was a loud knock when going over bumps in the rear right as there was no more oil in the bushing and it was just knocking on the body. now drives great without rear noise. These bushings are very easy to install compared to standard bushings. They entered the building with a little persuasion by the hammer. Removing the old bushings wasn't easy, but it took over an hour with a pneumatic chisel to get them both out. Total time for my project was 4 hours but what is the difference. Thanks again for the energy tag for another great detail. 02 jetta tdi 247,000 km