Does NOT fit 2007 "Classic" Models. If you're looking for a performance lift for your truck, but want it to still be able to be a daily driver, you've found the right kit. This CST Suspension lift kit uses fabricated lift spindle uprights (3.5") and a pair of 1" strut spacers for each side to achieve up to 5.5" of front lift and Coil Spacers in the rear to achieve 3" of rear lift. Stainless Steel Brake lines are also included which will improve braking performance (the oe lines are too short to accommodate the lift). This system will not cause your Stabillitrak to malfunction. If you're worried about ride quality, don't be. Your truck will maintain its ride quality after being lifted with this kit. You'll also be able to fit up to a 33" wheels 8" wide wheels with 5" of backspace. The part number for this item is CSK-C23-33 and it fits 2007-2013 New Body Chevy Avalanche, Suburban, Tahoe 1500 2WD models. This kit ONLY fits the 2WD.