WnP 1999-2006 Chevy Silverado 4x4 Front & Rear Lift Kit Torsion Keys, Blocks & Shock Extensions Front & Rear Lift Kit For Your 6 Lug GM Truck Fits 1988 - 2006 Chevy Silverado, GMC Sierra 1500 4x4 Trucks 1" - 3" Front Lift Adjustable Cast Torision Bar Keys With Front Shock Extensions 2" Lifted Fabricated Steel Blocks w/ High Carbon Steel Ubolts Lifetime Warranty