As of what i have read it is almost impossible to find a full water block for an MSI version of the R9 290 and no custom fan heat sink fits it either. I am doing a cross fire soon with another MSI R9 290 but from how much head one produces "Without an overclock" i would hate to see two of them with an overclock because it will make my room into an oven! Is there any option besides custom building a water block for it myself?