The temporary parts came in to see if I could get some clean routing for the motherboard/ram/gpu loop:

However it didn't quite work as expected- I couldn't get the 40mm extensions to work with the 5 way rotary snake, however a SLI connector did fit.

Now I'm not sure whether to:
- get two more sli connectors (I need this one)
- use two compression fittings instead
- get two of the bitspower crystal sli links to match better