Yeah the frame tank is a old 4x4 trick. We were thinking of using an air tank, but why when we have that nice big frame. There are no plans for a compresor, we will just fill up the frame and call it good. After all the bags are for the ride, and they were cheap. It's made to sit level with air in the bags. When they are flat the car will sit too low in the rear.

Zach