WULF 3" Front 2" Rear Leveling Lift Kit with Spindles and Blocks Comes with WULF 3" Lift Ductile Cast Iron Spindles / Knuckles, Hardware Included, 2" Lift Ductile Cast Steel Angled Blocks, (4) Zinc Coated U-bolts, Hardware Included FOR: 1999-2006 Chevy Silverado GMC Sierra & 2007 Classic 1500 2WD NOTE: 2WD models only.