You are looking at reverse rotation Procharger P1SC Supercharger head unit with 6-rib pulley and a 00-04 Mustang GT 4.6 2V mounting bracket. The supercharger spins smooth with no shaft play. It has a fresh oil change as well. This is the loud version. It was bought as you see it for a project that never happened. Please view the pictures and video provided as it will come exactly as shown. It will be very well packaged ensuring safe arrival at your door. Thanks for looking!