I'm currently looking for a metal cp with a street fighter-type joystick/button layout for a data east cabinet (the cab looks like a robocop/bad dudes style cabinet but the marquee isn't curved). It currently houses a dedicated karate champ and already has 6 holes (4 for joysticks and 2 for the start buttons). I'd prefer not to add anymore holes to it (plus I don't know how to cut into the metal) and as a bonus, I could always convert it back to a karate champ.
My other option would be to just build a wooden cp box to house the controls I need, but I really like how the rounded cp looks in it's current state. Anybody have any suggestions?