AirLift System On Ford F-53, Adding Motion Control Units

I have all 4 bags on my F53 controlled independently from the drivers seat. I think it is less expensive than what you are looking at, and can be changed on the fly. I originally got it because I needed about 1" to clear the tail on my driveway. I just air up the backs and dump the fronts just before I pull in.

I have never experienced the sway you seem to be getting.