The first picture is really dark; but, assuming there are no underlaying layers of paint on the Namco cab, my guess would be that it started life as a Rally-X cab.
The current Wico stick is about where the left smoke button would have been, but it should have had two buttons horizontally on the right side, near the top, for start buttons, in addition to the current one.
The CP may also be a drilled out Galaga CP.
The stick and button locations are about right for it, and it had the stacked start buttons on the right, like Pac-cabs.