Well... although I had hoped to make this a do-it-yerselfer, I ended up having a truck shop in Stockton (CA) do the install; there was some welding required and the truck bed was going to have to come off. Clean job, but they didn't line up the rear axle correctly, so I had to readjust that and get it aligned. The dump switch makes it much easier to hitch up, and the programmer allows pretty easy adjustments. The sway bar and control arm links are massive, as are the rest of the parts (think Peterbilt). The combination of the Kelderman kit and the Bilsteins keeps the truck pretty well planted while towing our race car trailer, which when loaded is right at the 10K load limit. We have the rear kit only, not sure that the front kit is really necessary. My wife loves the hissing sounds when the system is adjusting, guys will stop and stare at the truck wondering what the heck is going on. Very cool. An expensive upgrade (about 6K installed), but worthwhile if you are going to be doing some serious towing. In retrospect, we probably should have ordered the 1 ton dually, but we wanted something that could double as a grocery-getter/Home Depot horse when the trailer is parked.