Need help choosing radiator.
 

Ok this is my situation. I've been reading both this and the OCAU forums for quite a while and I think I'm finally ready to piece together a watercooling setup. The big missing link for me is the radiator, I'm hoping some bright individuals here can offer up some suggestions to compliment my system. For this setup my goals are silence followed by performance. So here are my preliminary choices of components, please feel free to offer a suggestion if any of these are clearly not good ideas.

Case: Lian Li PC60
Tubing: 1/2"id
Waterblock: MCW6002-A (with luck, a LR G5 eventually)
Pump: Eheim 1048
Bleed Method: T-line

I guess the question here is.... if I'm going for silence (followed as closely as possible by performance), what would be a good radiator to use? Right now I'm hoping to do this with a heater core that will accommodate 2 120mm fans (hopefully nexus). I remember Cathar describing his ultimate silent system and specifying 2 WAFO (weak-ass fan optimized) radiators. These were one pass, does anyone have some idea of a specific heater core part number that may fit this description? I really want to make sure I make the right choice with this component since a great deal of the final system performance will hinge on it. Is there a viable heater core (single pass?) that can use 2 120mm nexus fans? Any help would with my solving this dilemma will be truly appreciated.

Is there a single pass radiator that's close to the same size as the 2-302 Bonneville core? I really like the size of that core, but I'm not thrilled by the Bonneville core being double pass. Is there a single pass core out there that fits in a 5 1/4" bay?

2-342, similiar size to the 2-302, although it is about 1" wider and not as long. I don't believe it would fit in a 5 1/4" drive bay though, being that it is 6 3/8" wide.

Go here: http://www.autopart.com/radiatorinfo/heatercoretech.htm and enter GDI part number 399090 for specific info.