Hi there, I've just acquired a ASUS Poseidon graphics card with its hybrid cooling system and plan to later hook it up to watercooling.

Because of the way my system has been built around my work desk, I have no limit on the radiator size (at most 10" x 10") as I would be mounting it externally with a slow (but large) auxillary fan to minimize noise. I'm also going for a full aluminium setup to avoid corrosion from the card's aluminium water channel. So far almost all raditors available from watercooling sites have copper tubing and restricted in size to fit inside the chassis.
There are some motorcross bike aluminium radiators on Ebay that seem to fit my requirements, but I am looking at the possibility to source it locally. Does anyone here have any experience with something like this?