I'm at that point (Head job vs New Motor)

It's looking good, what did you have to do to install the intake on 64-65 heads ?

Originally I thought that a Prev Owner had hogged out the intake holes to get the right angle for the older style heads.

But after taking it off and researching some other member's experiences it looks like these heads are in fact the 64'-65' heads with the 66+ bolt angles so it had no fitting issues..