The M.O.R.E. Jeep YJ "through" the frame shackle reversal system is a bolt on and weld in construction with all hardware included. A shackle reversal system or "SRS" allows the front suspension to travel in a much more natural action when the spring compresses. The front pivot brackets are fully welded and powder coated if applicable. They bolt to the stock shackle mount and lower front bumper mounting holes and additional holes that you must drill in the frame. This S.R.S. mounts the shackle through the frame. A hole must be drilled in the frame and then a tube welded in it, polyurethane bushings provided are then inserted into the tube and the shackles provided hang from each side of the frame. This method will not lift the Jeep. The shackle bolts are greaseable which makes this system superior to others out on the market. The front driveshaft will need to be modified with a long travel slip in stub. It will work with or without a lift kit, spring under or over the axles. Zinc plated shackle plates are only included with the powder coated kits. Stubby Kit versions with more front approach clearance also available.