So we have a Naomi GD-ROM cab in our basement with.. Sports Jam... in it. It's what came with the cab when we got it years ago and it is what it is. We'd like to change it but we have one problem.

The control panel only has two buttons per side (plus start buttons). I'd imagine drilling holes and added buttons wouldn't be too difficult, but does anyone know if there are existing hook ups to bring it to six buttons, or those have to be added yourself. I found two bundles of wires hanging unhooked, but I don't know if those are them.

Anyone have experience with Naomi hardware and can help out? While I'm at it, is using a non-GD Naomi board with a GD unit as easy as popping out the unit that plugs into the card spot? Thanks.