Easy bolt-on installation. Drops the front 2-inches and the rear 2-inches. Can be fully realigned to factory specs. Can be returned to stock height. Installation on 1988-1991 1500 Standard Cab models will require the use of rotors and bearings from a 1988-1998 Extended Cab model2-3 hourshttps://s3.amazonaws.com/roughcountry/install/92726000.pdf1988-1999:2WD:Chevy:C1500/K1500 Pickup;1988-1999:2WD:GMC:C1500/K1500 Pickup