My old Mac Pro from 2010 has been retired due to switching to the cloud - but I couldn't part with the beautiful case. The components for a Windows based, water-cooled system came from my Shift X from 2018, all other parts were left over from other builds. Only the Barrow Boxfish reservoir was purchased separately, because the EK-Xres had no space between radiator and GPU.
Disassembling the Mac Pro Server was a real challenge. Comparable projects online always left the upper compartment unchanged - but I really wanted to install a 360 mm radiator here. To do this, the shelf had to be removed without destroying the housing frame, so that the door mount could still be used. My normal Dremel capitulated to the thick aluminium and steel of the intermediate shelf. Only after borrowing a Bosch angle grinder (Powertool) the cut-outs for the radiator could be made.
For the front radiator I sawed a bracket out of an aluminium angle. Motherboard-Plate and IO area are from LaserHive, thanks a lot, the set works fine. The water cooling with the EPDM softtubes was then easily installed. All cables are custom-made from MDPC-X leftovers from my other projects, I ran out of Riviera Blue for the Molex cable to the AC-Quadro. The cable-sleeves are UV-reactive and shine with 2 UV-LED-Strips from AliExpress.
For the transparent side window I used two 1.5 mm thick acrylic glass plates and screwed in the original aluminium frame of the door. The Sakura pattern is laser engraved and looks nice with the right illumination.
Overall the system runs very quiet and cool and allows me to start the first round of gaming of the evening after a day of work even in my office.