Not sure how this idea will work based on a siamese intake port, but for a IR cylinder head design, it is very accurate. Many top Chrysler engineers used the Ramchargers results when they designed and developed the Hyper Pack intake manifold that has runners that are 18"+ or longer back in 1961.
Josh, the factory Ford 300 EFI intake has runner lengths that are close to 16" or 17" in length. The only reason the Slant 6 can have runners that extend straight outward is because the center of the engine is practically inline with the glovebox and not the center of the engine compartment.LOL Think of extending the runners outward about 6"-8" and then do a 90° bend upward and maybe back toward the valve cover to get the rest of the length. The Atlas 4200 engine and many others engines use this design very successfully, and have since EFI became the norm 20 or so years ago.
