I have 16+ McGs on my 02 RCSB, torque to specs with zero issues. they have been installed since 2012. The hardest part of the install is removing the lower ball joint for the spacer, if you choose to use it. I actually removed the spacer to adjust my ride height the way I wanted it. so I...
Mine has McG's 2" spindles and McG's 3" springs, it rides pretty smooth not too far off from stock IMO. I plan to cut the springs to gain 1" more drop since the 3" on a RCSB only drops 2" accoding to McG's rep.
Only mods so far is the McG's 4/6 and Centerline wheels. I scored an LS3 cam so that will be going in, and want to do the e-fan conversion. Its my daily driver so have to keep the mods down to weekend jobs. 4.10s might be happening too.