This 3" kit now includes Clevite brand OEM style bushings, proven to hold up to even the most rough and tumble trailblazers, and features increased vibration dampening. A set of MOOG Problem Solver pressed in ball joints also ship with this kit; pre-pressed in to expedite installation and requires no reaming or modifying the spindle. This kit also includes our new N3 Shocks - custom tuned for balanced on and off-road use - as well as forged torsion bar adjuster keys, a differential drop bracket, and your choice of rear fabricated lift blocks or add-a-leaf sets.Redesigned for easier installation Maintains stock geometry Increased ground clearance Control arms include MOOG Problem Solver pressed-in ball joints to ease installation. Control arms include Clevite brand OEM style rubber bushings Forged torsion bar keys are stronger and more durable. Fabricated blocks are stronger and offer a longer lifespan than cast blocks. Includes application valved N3 series shock absorbers which offer the best in balanced performance for on and off-road use.Will fit 1999 "Classic" model pickups. ONLY fits models with 6 lug wheels. Does NOT fit straight front axle models.6 - 8 hourshttps://s3.amazonaws.com/roughcountry/install/92754500B.pdf1988-1999:4WD:Chevy:C1500/K1500 Pickup;1992-1999:4WD:Chevy:C1500/K1500 Suburban;1992-1994:4WD:Chevy:K1500 Blazer;1995-1999:4WD:Chevy:Tahoe;1988-1999:4WD:GMC:C1500/K1500 Pickup;1992-1999:4WD:GMC:C1500/K1500 Suburban;1992-1999:4WD:GMC:Yukon