I just had a Currie 4" installed. So far I really like it. Hopefully this weekend I'll get to do some flexing.
FYI for the OP, my kit included coil springs, all adj. control arms, front adj. track bar, shocks, rear relocation bracket for track bar, front sway bar quick disconnects, bump stops, rear sway bar extended links. I also added a SYE kit and new CV drive shaft.