[Specifications] Lift Height 1-3" Front + 3" Rear Material Steel Drive Type 4WD [Compatible with the Following Vehicles] For Chevrolet Silverado 1500 1999-2006 4WD 6-Lug Only | 2007 Classic Models Only For GMC Sierra 1500 1999-2006 4WD 6-Lug Only | 2007 Classic Models Only [Product Features] 1. Give the vehicle a more even stance to enhance its appearance. 2. Offer extra ground clearance to enable the use of larger tires & wheels. 3. No cutting or welding is required. [Important Note] .