This assm. includes the special left hand thread 3/8"hex drive spud to go in the center of the cam that is made from heat treated steel and rotary broached for a concentric fit to the fuel pump shaft. The mounting bracket and spacers are made from billet aluminum and black anodized. Included are bolts and washers to mount the bracket to the engine.
Holes must be drilled buy the customer to mount the fuel pump, fuel pump extension or offset mag drive depending on which extension or offset mag drive you choose.