Raspberry Pi 4 case mount with 30mm and/or GPIO options REMIX to include slide mount

I thought I'd create a REMIX of my case, in order to not get the post mixed up into a mish mash of cases.

The original case is here:
https://www.thingiverse.com/thing:6158413
Where the top part of the case can be found, as there is an option for GPIO.

This case slides into the mount and is retained by a push clip.
The clip needs supports, most likely.
The case in the image was printed in PETG as I find the flex handy but I'm sure PLA would also suit.