IS A ‘65 383 BLOCK DIFFERENT THAN ‘66-72?

Troub said
I keep seeing notes in the product specs for new heads, intakes, etc…. That say compatible for 383’s ‘66-72…..will there be issues with my 65 383 block accepting things like new aftermarket stuff?

Here is an example from Edelbrock for their intakes…..says 1958-…… in title but 66-72 in description. Or am I reading it wrong?