14-71 Littlefield hi helix retro with Kobelco K-11 rotors. This supercharger uses billet bearing plates and front cover to insure maximum stability and strength. This supercharger is designed for all out race applications and will provide maximum boost to your engine. The case is anodized alum. and the rotors are 120 degree billet hi helix rotors with teflon and nylatron to seal the rotors to the case as well as to one another. The case is machined to use an o-ring where the injector mates and all bearing plates are machined to use an o-ring for a superior seal. The blower is drilled six spots in the rear for fuel with th e top opening mesuring 10.500 inch to provide maximum boost. This blower must be moved back on the blower manifold to seal up the front discharge. Blower can be ordered polished for an additional $200.00.