Update!
While I have internet connection, I'm uploading an updated, modified, and tested version. All credit goes to @Zahg! Huge thanks for this!
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Original case needs some adjustments. Check out comments and do not print it for now!
There'a a remix you can use https://www.printables.com/model/707638-raspberry-pi-5-pineberrypi-hatdrive-bottom-case-re
Unfortunately I'll be away till mid-march. I'll update this to fit everything properly once I'm back!
I've decided to remodel my favorite RPI case made by Stamos from scratch and adapt it for the Raspberry Pi 5 with NVMe HatDrive! Bottom from PineberryPi
https://pineberrypi.com/products/hatdrive-bottom-2230-2242-2280-for-rpi5
I still haven't got my HatDrive! Bottom, so I haven't fully tested this. Thus there might be some small adjustments in the future.
Print at your own risk! :)
Edit.
Well it seems I won't get my HatDrive before leaving for 2 months trip, so as requested I'm posting step files for tinkering, fixing, remixing, and adapting it for the best fit.
You can get the HatDrive models here https://docs.pineberrypi.com/resources-3d-models
Also, huge thanks to @Zhag for being the first soul to print this and for all the comments. :)
The author remixed this model.
Remodeled from scratch.
Adapted for Raspberry Pi 5 with PineberryPi HatDrive! Bottom