LD340 for W2 heads - Have you seen any?

I have an Edelbrock LD340 which has the W2 ports and bolt pattern. I am just wondering if this was ever available or do I have a one-off custom intake. This came from a racing team out of Reno, NV, and was rumored to have been run by Walker Evans. This thing is ported to the max, as are the heads. They all came in the same deal. See pics below. Thanks!!