Auto Spring you have to call them. I got mine for $90 shipped and put them on and i didnt see a change in my ride at all bc i was already running a 6" lift kit and 35s so i didnt see a change beside the front sat level. If your looking for the nice smooth ride quality in a truck then go ahead get the bilsteins but IMO i dont think they are worth buying to make the truck ride better and to get a lift out of it. BC to me a truck doesnt need to be a smoother ride then what it already is. So i say just get the Auto Spring leveling kit no bigger than 2.5 and install the thing yourself. But then again others have their opinions on this im sure. But in the long run do what you think is going to make you happy
Last edited by mhockey9090; 06-08-2009 at 04:45 AM.