I have the Roadmaster Active Suspension on my 2004 Ram 2500 CTD...I think it works very well...unloaded, my truck rides and drives as it did prior to installing...with my 5er hooked up, ready to tow, it sets level with no squat, and rides as well as it does unloaded...this is the second truck I've had with the RAS, and I'd definitely do it again if I made another truck purchase...by the way, I installed the RAS myself on each truck in about an hour...you can also adjust the preload for additional weight if necessary.