Is the attendance reported by the schools the number of tickets that are sold for the game? Or the actual amount of people that come into the stadium?
Syracuse game was reported at 31,329, and the lower bowl wasn't totally sold out (guessing maybe 1000-1500 seats remaining), and the 200 sections weren't open.
So if the attendance is the same as syracuse, and then you add in the extra 1200 or so lower bowl seats, that would put it at around 32,500. The north 200 zones are said to have 3,900 seats. So if those sell out entirely, that would put it at 36,400 for attendance.
I don't see any way we get to 45k at this point, but if they were to open the south 200's and do them at a discounted rate, you could possibly get close to 40k.