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Museum of the Game® & International Arcade Museum® Forums
Compiling these all into one listing...
Donkey Kong PCB with SuperBike conversion. Working.
Donkey Kong Jr. PCB with Hero in the Castle of Doom conversion. Working. Fun game.
Shinkai Driving Force conversion on Pac-Man PCB. Was working 100% when I put it away a few years ago but can't guarantee it as I have no way to test currently. Quite hard to find.