Offenhauser 5925 Carburetor Adapter
$91.00Carb Adapter Fits AFB carb onto Holley 4500 manifold. Carburetor Bolt Pattern:4-bolt (5 3/8 in. x 5 3/8 in.) Manifold Mounting Flange:Spread bore 4-barrel Manifold Bolt Pattern:4-bolt (5 5/8 in. x 4 1/4 in.)