Alaska, Hawaii, Puerto Rico, Guam, U.S. Virgin Islands, Northern Mariana Islands, American Samoa, and other remote area may require additional shipping fees. Please contact a member of our team for detailed shipping charges. Description: This Carburetor adapter kit adapts square flange carburetors to Quadra-jet 4-barrel intake manifolds and is 3/4 in thick with an open center, square bore to spread bore. This kit install quickly and easily. Gaskets, studs, nuts and washers are included. Adapters are made of die cast aluminum. .