Yes. This is EXACTLY what I have done. I power a 4-port USB hub, slimline dvd drive, and my Xenarc LCD off the Opus.I read a post on this board to run power up to the front of the car from the trunk you cut a 5V and 12V extension molex plug from the motherboard then run what ever length you need between the now cut molex plugs reconnect the plugs at the new length.
Then you have a 5V and 12V plug up front to connect stuff.
Is this correct?