Summary

Needed bays for different 5.25" drives.
Optical drives and disk bays.
Check to see if you need any changes to the back end.
I tinkered theese to be printed as 3in1 object and a bit shorter than the original.
Also, I customized to fit Olmaster and ICY Dock drive bays.

Post your makes, and give the original designer a like:
https://www.thingiverse.com/thing:4349609