[YENKO DEUCE REGISTRY]

It's most likely a Marine block, that was how Yenko was marketing them back in the day. I know of some circle track racers that bought them from Yenko, but very few muscle car guys. They didn't come in any of the Yenko cars, so the history is somewhat limited to a Yenko counter sale. Neat blocks though.

I'd like a blown up one to make a glass top coffee table out of, would go nice with the 15x15 cragars / end tables that I have stashed away!