First I want to thank J. Colip for his review. I have the same Chevy 2500 with dealer installed ProComp 6"" lift. My truck had 19k miles and those ProComp front shocks are garbage. Totally shot! The rears had some life. These Bilsteins are super nice! Much improved handling and body roll. Easy install. It's great that Bilstein makes these valve specific shocks for lifted trucks.