LEVRLING LIFT KIT: HOW DO I INSTALL THIS KIT? These strut spacer kits install easily and quickly using only basic hand tools, all from the comfort of your driveway. Simply unbolt/remove your factory strut assembly (no spring compressor required!) Install the strut spacer on top of your original strut mount, and reinstall the strut assembly. Rear lift blocks simply install between your axle and OE leaf pack using our extended U-Bolts. .