I'd grab that game in a heartbeat. It's an attractive cab (with all of the curves) that would probably look better in the house than many cabs. The game's pretty decent too.
If you really WANT to part it out, Ataxx uses a standard-resolution monitor, so providing the frame will fit (or you can swap the tube and chassis if you have a frame for Ms Pac), it should work in a Ms. Pac. Maybe you could swap the monitor over and get Ms Pac working to earn you some brownie points while you hunt down a monitor to put back in Ataxx. Once you put a monitor into Ms Pac I wouldn't plan on using it for much else as burn-in will probably start setting in. Normally, I'd say a puzzle game is usually a much more wife-safe purchase, but with the alien goo theme, I'm not sure this one would go over quite as well.
If it weren't for the 19" monitor, I'm sure that cabinet would have been destined for a Golden Tee conversion.
The
FLYER has a bit better picture of the original cabinet.