Reckon a Dtek GFX2 block would still cover the core on this card, assuming a suitable mounting pate can be found/made?
Done a bit of digging. Apparently the IHS size is not pretty much the same as on the GTX280, and I know the Dtek GFX2 covers that ok. So, looking at the design of the stock cooler on the GTX480 its is actually ideal for a core block only solution as when you take the cooler apart the core heat sink separates nicely from the aluminimm full cover heatsink which cools the ram and vrms
See
http://www.legitreviews.com/article/1258/3/ third image down.
This means you can simply leave that in place and not bother with separate copper sinks for the ram and vrms. This is the ideal scenario when using a core only water block. It will cool these chips and also help to prevent the card bending which is sometimes a problem with core only blocks.
I guess the Swiftech MCW60 will also cover the IHS and I assume there will be mounting hardware made to fit the GTX480, although I personally made my own plate on the GTX280.
The above said though, I'm still going to give this gcard iteration a miss, hopefully Nvidia will sort out the short comings, but keep the cooler fitting ddesign.