This part was designed to be used with the retro blower and make installing a retro blower on a conventional blower manifold a snap. It is made from 3/8 alum. plate and uses 7/16" flathead bolts to mount the plate to the manifold, then the rest of the holes are left blank so the racer can set the blower where they like as well as choose the shape and size of the discharge hole to move the supercharger back sealing the front of the blower up on the manifold and helping the distribution of the discharge from the supercharger to be more centrally located in the manifold. The plate includes a set of cut down blower studs and flathead mounting bolts. Plate measures end to end 19" long.