Hi Jeff,
Yes, I did forget to mention it is a standard transmission (four speed). According to the old AMK radiator tag guide, it should have a soldered on C6ZE-H2 tag, but no longer available. The current AMK guide shows the C4ZE-G2 tag only good for early 1965 and the C4ZE-Y2 for 1965. My radiator guy is going to call AMK and ask them why they don't offer the C6ZE-H2 tag any more. The fall back will be the C4ZE-G2 tag.
Thanks
Cory