This kit offers a little more performance over our Stage 2 kit with more cam lift and stiffer valve springs. We recommend adding our Mikuni kit, to take full advantage of the camshaft's performance potential. Add an exhaust header for a complete kit. Your Hemi Predator comes with a factory .550 compression height flat top piston. With the rod supplied, your stock flat top piston will be at deck height! NOTE: This Kit Requires Mechanical Knowledge! Some Engines May Require Additional machining and Clearance, Especially Hemi Motors. Kit Includes: