This is a raspberry pi screen mount for the prusa enclosure

there are 4 parts

bracket - this is what will go directly on top of the enclosure, it has holes to avoid some of the screws on the top of the enclosure, and also access holes so that you can screw into the encloser

frame mount - this is the main part it screws through the bracket into holes on the enclosure. it has holes on the front for M3 threaded inserts 

back plate - screw the pi screen into this

face plate - this screws into the M3 threads you added to the frame mount and sandwiches the back plate in the middle

note - the display cable for the pi is hard to get when everything is installed, so do before installing the frame