I am interested in the aquagratiX for HD 5870 and HD 5850 (RV870) G1/4 but I have a 5830. 
Will the block work on a 5830? If it does, could I get some suggestions for a liquid cooling setup? Pump, radiator... : ) 
My case is a 
Cooler Master ATCS 840 
(I will be doing a crossfire setup in the future)