I don't think it's as simple as that, as I believe there are slightly more seats than the capacity. I could be wrong though. They certainly managed to remove seats from the lower East to make space for 1901 without reducing capacity.
Why do the club always feck up and do this from the wrong end. They did the same for the Doncaster game, there's a photo of the crowd from the North end which is great, but if it was from the South it would be 10 x better.