I designed these clamps to mount the standard display on top of the standard frame. They snap on, no bolts required, although you could use M3 bolts to secure them in place better.
If you want me to customize the design just let me know, and I will upload an extra file.
Please share your experiences and findings if you make one, i'd love to hear (and see) them!
I used a wall thickness of 1.2mm
Top and bottom of 0.6mm