I have a YY-0221B and I'd just like to start off by saying I love it. I just bought a watercooling kit off of
http://www.overclockershideout.com and plan to install it as soon as it arrives. I plan to put the pump/res combo in the 3 extra 5.25" drive bays and mount the radiator either externally and wait to cut up my case when i get a BlackIce, or just screw myself over now and hack out the back where all the 3.5" drive bays used to be, before i took them out.....
Happy cooling.