I was going to have air shocks do the job since it's easier and cheaper until I kept reading about mounts breaking and expensive damage so it scared me off. Maybe they had rusty mounts or something and didn't check first, dunno.
Air shocks are fine if they're used as shocks instead of as lifting devices. The problem with air shocks isn't the shocks themselves, its the owners running the pressure in the shocks up to jack up the back of the car. That takes the weight off the springs and puts them on the shocks, and the shock mounts weren't intended for that. If used properly, they shouldn't cause problems.