I have seen the Gran Sport that Supercars referred to, here in the Northwest. The original engine for it sits on a stand, and is quite a piece! It's a small block Chevy, with provision for a road tube at the top rear of the motor (all small blocks through 1967 I believe). But it's an alloy block, not iron! The Winters Foundry mark on the aluminum intake made for those four twin-throat Webers is also awesome..
I don't have a picture, but here is a link to a
1963 Gran Sport drive test .
-Sam