I really like the Diatone GT-M3 cage, not so much the bottom plate construction.
So I managed to put the GT-M3 cage on a Fpvframe.ch PractiX bottom plate (also see: https://rotorbuilds.com/build/26466 )
The bottom plate takes both 26x26 AIOs and 20x20 mounting.

To have the cam flush, I printed an adapter designed by Berat Builds.
And since I am prone to losing the drone in tall grass or some bush or tree, I added a vifly finder mini.

All in all a nice, tight build with an dry weight og 109g.

In my two builds I tried both and while the 26x26 needs an adapter in the middle, both work fine.
Still liking the overall formula with the GepRC 1204/5000kV and Gemfan 3016 on 4S and Running Emuflight + Bluejay.