The panel I have on my NBA Jam (same cab, including the off-center screw in the middle of the speakers) is a bit over 34". It's a two-player setup, with a trackball and a spinner next to each other in the center of the layout.
Since the bottom of your control panel is probably 26.5", you could always cut a new top. I like a little bit of overhang, so I'd go about 28" or 29".
BTW, I love the angle of the monitor on this cab. It leans back enough to play Golden Tee without pounding glass on every shot, but not so far that it obviates playing other games while sitting on a stool.