My build date is May 69 so I guess i need the C9ZZ-9600-F.
You need the second iteration of 1969 428 shaker bowls like I have.
I'm looking for the first type bowl for my car.
Damn, I'd sell you mine, but I'd have to obtain the first type beforehand so I could do it at the same price whatever that turned out to be.
I think the 428 midplate doesn't have the 2V/4V holes either, but I haven't looked into shakers for a few years so I just don't remember.