The offical AT motherboard size is 12" x 13.8" (roughly 30cm x 35cm) and the 2000 board is 33x42cm. Having played with putting 2k's in daft cases I must say the board is a beast.
Also from the photos the front keyboard, mice and joystick ports are not there, and there is very little clearance under the cdrom, considering if a 2k board is in there it will fill the case.
If I had put a 2k in that case I'd be bragging about my engineering abilities and showing lots of photos of the interior.
Gaz