Hi,
I'm sure that you have to use the "correct" gasket for the head, that
means early head, early gasket, late head, late gasket.
I also know that the horizontal spacing of the exhaust ports is the same on
both heads. At least Im pretty sure about that.
Like Ken said: line up the two different intake/exhaust gaskets and you
can see the differences.
As for Six-tech - it is a pretty good source of info, and I'd tend to
believe most of the stuff in there.
rml
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