Easy bolt-on installation. Drops the front 2-inches and the rear 4-inches for a level drop. Rear drop is adjustable between 4-inches and 4.5-inches. Can be fully realigned to factory specs. Maintains factory ride quality. Can be returned to stock height.Requires 17-inch or larger wheels Requires minor cutting and drilling Requires rear axle flip Does NOT fit 1999 "Classic" models (old body style)4-6 hourshttps://s3.amazonaws.com/roughcountry/install/92721200.pdf1999-2006:2WD:Chevy:Silverado 1500;2007-2007:2WD:Chevy:Silverado 1500 Classic;1999-2006:2WD:GMC:Sierra 1500;2007-2007:2WD:GMC:Sierra 1500 Classic
