Air Flow Research Cylinder Head - Eliminator Race - Assembled - 2.100 / 1.600 in Valves - 220 cc Intake - 65 cc Chamber - 1.550 in Springs - Angle Plug - Aluminum - Small Block Chevy - Pair-1110--Notes: Assembled Pair. Has Competition port job State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO