If you can't find the guts to restore it to the "Choice" format, you could install two micro atx systems and set it up with independent stations on each side. That way, two people can play their own games - one on each side, or, with Client/Server MAME or MESS can play vs. one another. For sound, could install ear phone jacks so they could use head sets to not inerfere with one another while playing two different games (of course, if you have an extgernal speaker for each, when in attract mode, would have your ambient arcade sounds due to different demos going on each side).