Well, here's what I have been told by Summit Racing Equipment and Bell Tech: Drop springs, shackle and hanger kits, and drop spindles will lower ANY vehicle if they are intended for the vehicle. The only problem is, neither company recommended going off-road with the components. Lowering components typically make for a tighter and lower suspension, and a lower center of gravity. The guy at Summit (1.800.230.3030) assured me that their lowering components are pretty stout, and affordable. Also, new shocks are a MUST when you lower. You'll need shorter ones to keep everything from bottoming out, unless you like that!
-Mike