I redesigned the LCD & Touchscreen front panels for my printer made at home and I modified them to be fitted on my Prusa MK3S also.
The LCD & Touchscreen support will mount using the same screws of the original, but be aware that you need to immers the nuts (M3) during the printing.
I fixed both covers (LCD & Touch) on the support using the bolts (M4) 10mm & M4 nuts.
I fixed the BIGTREETECH touch in the cover using the 4 clips (look STL file) and the bolts (M3) 8mm.
To power the Raspberry PI 4B I used the Down Control Module LM2596 connected directly to the 24V of the Prusa PSU.
The author hasn't provided the model origin yet.