Got the control panel laid out on on the plywood this weekend. Also ordered the controls, a 3" trackball, 2 competition 8 way joysticks, and 32 various push buttons, all Happ controls.
Nailed and glued in, had to pry the interior boards away far enough to fit a sawzall in there to cut the nails, but of course the glue kept clogging up the blade!