PERFORM AT YOUR OWN RISK!
Personally tested, do not recommend. Coolant flow rate is very too low and has difficulties to bleed air bubbles. This solution is much better https://www.thingiverse.com/thing:2700102
Corsair H55 Water Cooler adapter to work on a MSI GTX 980 TI 6G Gaming.
I had the tubes replaced, so that I could attach them into my main loop. Can make a video, if demand arrises, on how to replace the tubing. Use the factory screws and nuts, tighten till the PCB then un-tighten slightly not to damage the card. I put a small case fan over the capacitors to keep them cool, due to a lack of fans blowing air over them.
Temperatures decreased from high 80C on an overclock benchmarking, to 50C overclocked. Please keep in mind that I have a triple radiator setup with my water pump and fans running at full speed for the test.
(Apologies for the bad print, was a test of concept and forgot to take pictures of the final build. Attached a picture built into my PC).
Make sure to print in heat resistant materials like ABS. If you are running a second air cooled car above the custom water cooled one, then the hot air blown down from the cooler will cause materials, such as PLA, to warp.