The Navarro dual carb tooling insert measures 15 1/4 inches from flange to flange. There is a section missing from between the two carburetor mounting pads. This is where the Navarro logo was originally positioned. Apparently Barney used a saber saw to remove it at some point-probably for use on another Navarro project after the quad carb cross ram had run its course. Compare this image with Mazzolini's photos of the real thing and the resemblance is unmistakable.