I've done a few, the one complete car I did was about 5 years ago. It's got almost 20,000 miles on it now, and still no problems with the original components. A word of caution, there is some real junk on the market these days for controllers and compressors! Stick with the quality parts and you shouldn't have any problems as long as the install is done correctly. The car I did used Shockwaves in the back, Firestone bags in the front in a Heidt's IFS that was built for air ride, and a parallel 4 bar in the rear with Watts linkage...