Cast Aluminum Throttle Body Elbow, Holley 4150 Flange to GM LS-Style 4-Bolt 105 mm TB, Unique Way to Switch from Carburetor to EFI, Cast Aluminum, Polished Finish|Top Street Performance 81141P Cast Aluminum Throttle Body Elbow, GM LS-Style 4-Bolt 105 mm to 4150 Flange [Polished].
