Are you talking about your data cables or power cables?
I'm not sure if all power cables are interchangeable (to be on the safe side, I would assume not), but you can purchase pre-sleeved cables such as the
Bitfenix Alchemy Cables.
However, if you want a truly perfect and beautifully clean case - and have loads of time available- I'd recommend ordering some sleeving from MDPC-X and doing the sleeving yourself!
Cheers.