Aluminum Square Bore Carburetor to Spread Bore Manifold Adapter Kit Adapter 1932 Description: 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. Feature: Color:Silver Emission Code:3 Finish:Sand blast material: aluminum alloy finish: sand blast adapter/spacer style: open center adapter/spacer height: 3/4" application: sqaure bore manifold reference no: refer 1932 Quick and Easy Installation .