This truck has the Z55 suspension package which is magnetic only up front and magnetic + air in the rear. The front ride height would not be adjusted whatsoever, only bump and rebound stiffness depending on terrain. I'm waiting for the time to test the air system in the rear. I can hear the compressor make a single tick on startup, but no actual run time. I'm guessing I'll find that the compressor is junk and the rear bags are leaking. Arnott seems to be the go to manufacturer, guess I'll be on Rock Auto making an order soon enough. You know what's funny though, I've never noticed any change in the ride or ride height! It's always been tight. The drop is what's now brought everything to light.