GE, I did a search a few months ago for air bag overloads and found several suppliers. You can see the Rancho remote system at gorancho.com but it's hard to figure out their plumbing without actually seeing one. A guy I work with has one and answered my questions. All it does is pump up the shock with a very light compressor and they use a Schrader core type valve to bleed off the pressure. I think the Firestone site is ride-rite.com and I don't remember the Airlift site. I got a real cheapy compressor a couple years ago for emergencies. Firestone and Airlift both have standard and heavy duty systems. Even their standard duty units look 10 times better than what I have. I think you can just buy the compressor from either place. The HD compressors were kinda expensive so I'll use my cheapy til it dies! Craig