Untested.
I resized and modified this case to fit my needs (12mm DC input plug, HD-PLEX DC-ATX PSU, stock-ish sized cooler), and cut out the bottom panel some so that more air could flow out.
Also turned the stl files into some somewhat usable cad files (inside bevels and things are still full of triangles)
Main modifications are pushing the front 20mm away from the mobo and increasing the inside height by 15mm, changing all the holes so that the bolts will screw into heated inserts (holes are 4.7mmx5mm for the inserts to go in), adding some feet (probably best printed in tpu, also has holes for heat inserts), and cutting the bottom panel to have a 5mm gap on the sides and probably about 20 on the front