Is it possible to switch the PCB of the Modern F-77 between the classic/vintage F-77 and Modern F-77 cases? I’m hoping for this interchangeability so I can enjoy the classic case’s appearance but also being able to take the PCB around in the more compact Modern case when I need to bring it to or from places.

I also would like to claim serial No. 265, whether it’s available on either the classic or the modern F-77 case. How would I go about that, seeing as there’s both an option to tick on the buying options of the keyboard itself, as well as a separate item that I can purchase to buy a special serial number?