Hooker Headers - Competition - 1.625 in Primary - 3 in Collector - Gaskets / Hardware Included - Stainless - Polished - Small Block Chevy - GM A-Body / B-Body / F-Body / X-Body 1964-74 - Pair-2451-2HKR--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--YES Truck Freight ---NO