This manifold was nick named the RAT ROASTER because it created power to beat Chevy big block powered cars. The manifold is in great shape. The carburetor is the rare, early Holley Dominator. The number is 4150 and it originally came with a choke. The choke butterflies and shaft are missing from the carburetor. See images for codes. A rare and beautiful set-up from the golden age of muscle cars.