I am in the middle of building an ArcadeDepot cocktail. They are the 9" wide control panels (I do not have the third panel option). I believe their webpage has a jpeg that you can use to see/design the usable area of the control panel. If you want more measurement info, post what you are looking for - I can measure everything tonight.
It is based on the Ms. Pacman cocktail. BTW, there was also a Ms. Pacman that had 11" wide control panels.
BTW, I highly recommend these kits. I was going to build completely from scratch, but for the price, I think it is hard to beat.