Hi,
to prepare my visit on the Revision 2025 I tried to upgrade my CPC 664 with a Gotek floppy emulator. Since there were no 3D models available on the usual 3D printing pages, I designed one for myself. During Revision I uploaded the files to Printables, so you can download it there now.
Here is the link to the files (FreeCAD source file is included): Printables.com: Gotek Floppy Emulator Adapter for the Amstrad CPC 664 (https://www.printables.com/model/1269141-gotek-floppy-emulator-adapter-for-the-amstrad-cpc)
Please respect the CC-by-nc license :-)! Have fun.