Slant 6 Aluminum Performance Head
The was a guy that did a billet CNC head on Slantsix.org. IIRC there was no interest. Wanna blow some minds? Look at a Jag straight 6 head...pretty close bore spacing! Of course youd have to figure out about everything else too.
<<<PS>>> I think there was actually an AL slant head that was produced in South America and I think a slantsix guy bought it and had it sent up here. Dutra would know.