I bought a lowering kit, (Air bags) with a digital controller for my truck about 3 years ago. I did not use the rear portion of the kit and wanted you guys to see this. It's called a 2 way manifold valve used to lift and lower air bags. To buy this one piece is $263.00! It runs on 12 volts and I just pulled it out of storage and I'm sure I will find good use of it on one of my props!!!!!