Quoted from allsportdvd:
I would assume you could fit the new topper, I would like to do that myself. I think the XL display would be a more difficult proposition if it is compatible at all
I'm assuming you would have to ditch the entire WPC-95 system and fit the CGC Beaglebone Black/Pincontroller Hat. The DMD would need to go, but fitting a color LCD might be possible if there is room on the existing speaker panel.
The whole underside would probably have to stripped of the harnesses and replaced with the MMr PCB and driver boards. I don't know of the solenoids are running at the same voltage, but if they are, you might be able to just add connectors and patch into the MMr drivers. The WPC transformer would probably get replaced, but it might be worth designing a breakout board if the voltages were close enough.
It really comes down to dollars and cents. If CGC makes the parts available, it might be possible. I just wonder how many of the parts are available now, and what it would all cost?