I just ordered the rough country 3" for my 2004 2wd silverado, I've had experience with a fabtech 4" on my old 1994 GMC 2wd, and it was great. I would have gone with Fabtech again if it were not for the money issue. Me and a friend of mine put a small 2in rough country lift on his 2wd dodge ram a few years ago, the olny problem we encountered was that they sent the wrong nuts for the rear u-bolts so we had to go and find them, but he is still satisfied with it, and I know for a fact that he has ridden that truck pertty dang hard since then. As for the install time, it shouldnt take you more than 4 or 5 hours if you have any mechanical experence at all at least on the newer chevys you dont have to get into the wheel bearings. I had to on my old GMC that was not fun.