For 365.00 for the air bag kit and 385.00 for the compressor kit with dual zone controller.....lots of money.This statement should read "do Roadmaster active suspension and be done with it." With RAS you make the initial adjustment at the time of install and that's it. With Air Bags pressure adjustments must be maintained according to the load. An air compressor is needed, onboard or otherwise, and while you're on the road if an airbag fails, vehicle control is compromised. No thanks. The positives of RAS far outweigh the negatives...of which I've found none! Let's roll.
I always went two separate lines since check valves were not what I wanted in an air system. What a pain in the ass. The air bags rarely fail, it is usually the line or connector. The only time air bags are damaged is off-roading or putting the truck on a lift and drooping out the suspension.
I actually like this setup after doing a little research.