Desperately need experienced opinions on Engine Identification

pishta said
It cant be drilled to bolt to a 64-65 head because the bolt angles are wrong and would not seat against the manifold as the angle is more vertical.

pishta said
It cant be drilled to bolt to a 64-65 head because the bolt angles are wrong and would not seat against the manifold as the angle is more vertical. Yes, a late 64 (or anything past like June (?) is considered a 65 model block although the block did not change at all between those years and pretty much through 69. The pistons made the 4bbl version along with a hotter camshaft, that's about the only difference in the short blocks. heads were the same, intake was a 4bbl as opposed to a 2

Yes, I understand the block did not change. But the model year is critical because if it is a 1964 model year, it cannot be a Commando engine. At this point, the only way to know if it is a Commando is to look at the pistons I guess - which will be impossible for me.