Peter,
When I went to GFS yesterday I couldn't find any frozen pizza at all, which was surprising. They had lots of frozen dough, just no pizzas. The second link you gave looks more like I remember it, but back in my day I think they used imitation mozz and it was heavily loaded with cubes of pepperoni. Either way, with the quality that my NY style has gotten to, I am sure I would be disappointed with any frozen pizza at this point no matter the nostalgic value.
-Joe