High Velocity Heads Carburetor Spacer - Super Sucker - 1 in Thick - 4 Hole - Dominator Flange - 2.125 in Bore Diameter - Plastic - Black - 1250 CFM Carburetors - Each-SS4500-1.1N--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--YES Truck Freight ---NO