Yeah, JAMMA, 25". Oh man, I don't even want to think about rotating a 29" monitor in this thing. My back hurts for a couple of days after rotating the 25"!
The cab is on wheels, too. PCB is behind the lower door, the front bezel flips up to get access to monitor controls. Yeah, I like it. I want to rig it up for four players for all my kids and me to play at the same time.