I installed them on a 2003 Durango 4x4 5.9L. The original shocks had 180,000 miles on them and one of them was clearly leaking. After installation, I hardly noticed any more control or difference. After a few days of monitoring performance, we get about 2 front-end bounces after crossing bridges and similar bumps. I shook the front end while parking and after stopping it bounces up and down 2 1/2 times. They just don't provide enough cushioning for the Durango and are almost as useful as if they weren't present on the Durango. We'll have to replace them again. It's good that it takes everyone about 10 minutes to swap it out, but it was a waste of time and money.