Sounds good Blue.
Was hoping to catch the eye of those who have these heads so we can ID the respective dates. The way the #'s on type-1 above are likely to rust to an illegible state there is a good chance some of these heads are not recognized and end up being scrapped.
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1969 GTO hard top ~ Std bore 400, '70-RA3 block, 670 heads, Bal. & Blue... M22, 12-bolt w/3:55s
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