Hub is made from billet steel and bolts to the cam using a three socket head allen bolts. Kit includes thrust bearing and a shim kit. Shims are 1.125" O.D., .750" I.D. The racer gets two .005", one .010", two .015", one .020", three .030" shims.
Register on the backside of the fuel pump drive hub is .865" to fit most all SBC/BBC timing chain sets or .750" to fit Pete Jackson gear drives.
Racer can choose which hub for their application from drop down menu.