I'm looking for a set of NOS Denver 21 stud heads. These were the factory high compression heads for those that lived at high altitudes, as I understand it. Ideally I'm looking for an unused set that would work on a 1937 21-stud Flathead motor. Please email me if you have some that you'd sell.
I'm no expert on these, but I believe they're cast iron with part # or marking containing and "S" like "81AS" or possibly just "AS".
Thanks in advance for the help,
John
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