Seems to me you might be able to find a damaged set of aluminum SBC v8 heads for cheap as a starting point. You only need six good chambers.
I would love to see photos of this conversion in progress. All I have seen is what Leo S. put in his book.
I am all for projects like this if you can do most or all the work yourself. If you have to pay someone, maybe not such a good idea in my opinion.
