Air Flow Research Cylinder Head - SBF Competition - Assembled - 2.050 / 1.600 in Valves - 195 cc Intake - 58 cc Chamber - 1.270 in Springs - Angle Plug - Aluminum - Small Block Ford - Pair-1381-716--Notes: CNC porting 2.050/1600 Valves 7/16 Rocker Studs State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO