How hard is it to find the correct schematics, connectors and wiring to make custom power harnesses? The big 4 prong fan connector and the motherboard connector are just molex connectors and it should be pretty easy to cobble together custom length wiring for routing purposes. I'm not so sure about the drive power connectors, and small 3 pin fan connectors. Are they smaller molex too? Looking at a low speed fan adapter in my hardware kit, it certainly looks that way. I wire aircraft for a living, so with the proper information, wire, connectors and crimpers, it should be a no brainer.
Ian