Yes, certainly that version pump plate is what fit the hole pattern...the originals have all the mounting studs to fit that pattern. As for which one would be correct, I have no idea as I'm not a Sunoco guy. Hopefully one of our resident Sunoco experts can help with that question.
Neat pump....I have one too but the computer and faces were switched over in the 70's for 4 digit readout, so it just doesn't have the same presence as an all original one.