Air Flow Research Cylinder Head - Magnum Comp - Assembled - 2.300 / 1.880 in Valves - 345 cc Intake - 117 cc Chamber - 1.625 in Springs - Angle Plug - Aluminum - Big Block Chevy - Pair-2110--Notes: Partially CNC Ported State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO