99-06 Chevy/ GM 1/2 ton only air suspension kit. This kit will lay your truck on the ground with a 33" tall tire, 26-28" wheel. The notch comes one piece and slips over the frame then welds on. It has the upper shock mounts already welded to the crossbars. After installing the notch cut the frame and the box in the bottoms with the filler pieces we provide and your truck is notched. Install the 2 link bars on your factory hangers and bolt them to the rear end with the ubolt kit we provide. The bars already have the lower bag mounts and lower shock mounts already installed. The upper bags mounts are placed over the 2 link bag mounts then you weld it on and the bag mounts are done. Last thing is the pan hard bar. The notch already has the frame mount so you bolt it to the notch and weld on the axle mount and the suspension is ready for air bags.