1965 273 Head Gasket Question
Funny, I don't remember if I ever checked that out when I rebuilt my 273 over 10 years ago.
These are the head gaskets I pulled back then, and they do have all of the holes.
Couldn't find anything related to the part number. I did use the thinnest metal head gaskets I could find from flatlander racing. They were also Victor rather than Felpro blue. FP were about twice as thick as the metal ones.