AIR FLOW RESEARCH BBC 305cc Alum Heads Magnum 121cc Assembled 2100-1

AIR FLOW RESEARCH Cylinder Head - Magnum Comp - Assembled - 2.250 / 1.880 in Valves - 305 cc Intake - 121 cc Chamber - 1.625 in Springs - Angle Plug - Aluminum - Big Block Chevy - Pair.