TBS 250 Low Profile Supercharger 

All New TBS 250 Low Profile Supercharger - 3-Groove Big Block Chevy MerCruiser Kit, Polished

At last you can have all the features that have made TBS the leader in roots supercharging in a compact extremely efficient package This supercharger uses all new components from it's precision machined CNC cases to it's billet construction drive, bearing plates, snout, and more This unit features a quiet ultra reliable serpentine drive making it perfect for under hatch installations