Air Flow Research Cylinder Head - Eliminator Race - Assembled - 2.125 / 1.600 in Valves - 245 cc Intake - 70 cc Chamber - 1.550 in Springs - Angle Plug - Aluminum - Small Block Chevy - Pair-1137-TI--Notes: A/P State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO