I found this on Ebay while looking for a better rad.
http://cgi.ebay.com/ebaymotors/ws/eB...PcY_BIN_Stores
It's effectively twice as big as a Swiftech 676 and only a few bucks more. Granted, it would kill your flow rate compared to the 676, but with an appropriately powerful pump, would it be worth it? I would be quite nice to mount to the side of my case.