This is a USED Sprint Car Crank Water Pump Drive for a SBC, it is STEEL.
Sprint Parts Oil Pump Timing Cover Water Pump ASCS IMCA WISSOTA K&N USAC WOO
Sprint Parts Oil Pump Cam Drive 5/8" Square ASCS IMCA WISSOTA K&N USAC WOO
Sprint Parts Ed Pink 5 Stage Oil Pump Aluminum ASCS IMCA WISSOTA USAC WOO
Sprint Parts Header Collector 4 Cyl Midget Sprint ASCS IMCA WISSOTA WOO
MSD Sprint Car Crank Trigger to Magneto Cross Over Switch 7990
Sprint Parts Pedal "SPEED PARTS" ASCS UMP IMCA WISSOTA USAC WOO K&N