eeyah, I mention this alot, finding a block for your non-reference cards will def be a pain in the backside. You could go universal but then you'll need to be creative getting the mosfets/vrm's to cool as you don't exposure to the waterblock.I want to switch to water cooling but I can't find water blocks for those cards.
If you need more info PM me, this thread is for gallery purposes wouldn't want to side track it - we have a discussions thread for that