'd' is absolutely correct. In my travels to start the restoration of
our '64, I have stumbled across mucho good intel on the net. Sounds
like you have some lists of numbers. Trust them. Also, there are alot
of people out there that really DON'T know what they have. Someone
told them it was a......and they believe it without confirming. I
looked at an advertised 350 Chevy that really WAS a 327. The same
guy had a 327 for sale that was a '75 350. The guy he bought it from
told him..... See what I mean? The numbers don't lie. Good luck.