The capacity was around 70,000 the last time OU came to town in 2010, but with the renovations in the south end zone, that eliminated a decent number of seats.
With the success the last couple of seasons, I think they could fill a 70,000 seat stadium, but if the team is 5-4 or 6-5, there will be a lot of empty seats in a larger stadium for those colder games late in the year.
