I found this picture of w2 heads, not exactly like mine but this is what I meant by circular ports, now that gasket pic has then on the last pic as circular but closer in together, so I can't say for sure.
These are aluminum the ones I have are steel heads, I am (almost) sure they did not make them aluminum in the beginning when they first came out.
I could be wrong, oh God knows how many times I've been wrong but I can't say that the heads I bought back then were just out maybe a few yrs and it was unheard of having aluminum small block heads.
MAPS
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