Offenhauser does not make a manifold for the SBC that accepts the Weber DCOE carburetors. Offenhauser does make a manifold for the SBC that accepts 3 Weber IDF cabruretors. That manifold is available through White Owl Speed Equipment. The manifold is the base of Offenhauser’s low profile cross-ram with the triple IDF Weber top. Contact Dan at White Owl Speed Equipment at (559) 786-1864 for more information.