Hi Revo,
I'd be interested in purchasing something similar for a FlexATX to DC-ATX PSU adapter (HDPLEX 400W).
Similar to this one on offer from geeek - https://www.geeekstore.com/shop/flexatx-to-dc-atx-psu-adapter-bracket/
I have a K39 and have a makeshift bracket out of acrylic I've made but...