rarest small block intake manifold EVER???

I've only seen 1 STR-12 in the "real" world before on a 28 Plymouth hot rod. I can't imagine it would work well on the street. (see Hemi cross-ram).

:wack:
I recall seeing a Man-A-Fre manifold in one of the magazines. It used 4 4-barrel carburetors. I've never seen one of those other than between the pages.