I have a 2013 silverado 2500hd 4x4 and I want to lift it 4" to set it perfectly level. I was sold on the fabtech ultimate kit and then after some searching found some bad reviews on cv angles and other stuff. Cognito seems to be the forum favorite but I cant afford a 3000 lift kit. I don't want a 6-7 in lift because I will, in the near future, be pulling a camper and possibly a gooseneck. I don't do any off-roading , truck is a street queen, but I want a good ride and don't wanna loose turning radius. Anyone using a diff kit that I haven't found yet or maybe using the "improved" fabtech ultimate kit that could help me. Any help would be great, thanks!