Like many others my 90 K5 has developed a saggy behind. It's only an inch or two, but it still looks like crud and probably doesn't help fuel economy any. The rig drives nice, and the current suspension setup is working ok for my 33/12.5's. I don't want to lift it anymore because I use it to tow my boat and haul stuff with and I don't want to haul a ladder to get stuff in and out So question is just slap some 1 1/2 inch blocks on and call it good, or put in an offroad design 2 1/2 inch shackle flip and let the back end be a tad higher? Or go the extra and get a new set of springs? Thanks for the opinions!