I needed a mount for my Manta M8P for my Switchwire (Ender conversion). Due to size constraints, I originally designed the 4020 mount, then switched to 2020.
There's one quirk which I'm unsure of: The camera/display ports sit under the board, and the arm obstructs that area. You can definitely plug in cables around it, and I haven't figured out a better solution. Maybe you're more creative than me.
The author remixed this model.