Rare, multi carb intakes

And the elusive downdraft weber setup for 273's, posted originally by Hyper_pak

I saw the post by a member about the prototype 273 intake and it got me wondering about rare 273 intakes. Does anyone know anything about this intake? It was a Hot Rod magazine article on hopping up a 273. Claimed only Dave Koffel had one running at the time. I think they were wanting to do it, but the pictures are a mock up. On the cover shot the carbs are turned different in the center. Black and white pictures have them mounted different. For real?
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I got another message from the Koffels this morning!
"Enclosed is a picture of the CFX...engine and Dick Maxwell helping Dave the first time out at Muncie Dragway when we set the first Nat. record."

If you look close at the engine picture you can see the intake base and the runners to each barrel.

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Mr. Koffel told me there were only 2 of those Weber manifolds. He had one and I think he said a racer in Florida had the other.