Eventually I probably will make it a driving cab, but for now I'm gonna put a joystick CP on it. I'm in school so money and space is at a minimum. I'm doing one cab and I'm doing it as cheaply as possible.
I removed the driving panel and replaced it with a wooden panel made from scrap wood I had laying around. It mounts using the stock hardware and will fold down and bolt up just like the original. No permanent changes are being made so the old panel can be swapped back in in minutes. I'm going to use this panel as a base on which to mount a near-horizontal control panel with the joysticks.
It's not gonna be the cleanest setup, but it will work. I'd prefer some of the cuts to be a little straighter, but I don't have a table saw so I'm eyeballing it with a jigsaw. In the future when I have more money, tools, and an actual garage to work in I'll make something a lot nicer.
I added some pics of the button layout I'm going with. The six left-most buttons are the standard 1-6. The odd one on the right will be a second button 4 for use with Neo-Geo games.