What's so junk about the Phantom of the Opera ?? Surely it can be saved! If the cab is that bad on the Jurassic, can't you just rebuild the dilapidated half?
I mean if you're gonna gut one game for another then I'd just build a new cab!

(Note that I haven't done it before but I'm willing to take that risk )
Keep me in mind if it comes to that! I'll pull an Otaku and fabricate one!

To me it sounds like no matter what you'll probably end up doing new artwork because you chances are any empty cab you find will be empty for a reason!