If anyone is interested, I've posted new 3D printable, Pi4 cases for overclocking on Thingiverse
Both cases have instructions and can slide onto a stand.
I'm currently working on adding an SSD housing as well (built into the stand).
The cases use either a 30x30x7mm 5V fan or the ICE Tower fan;
 If anyone has an idea they'd like to see in/on/for a Pi4 case let me know