This is Nicao's card that we modded up one Saturday afternoon. He brought along a low-profile skived fin copper hsf. We had to chop a little off the one end of the hs, but no real modification to the copper was required.
Sorry, about the blurry pics, but you can still see the size of the copper hsf.
The ramsinks we used were cut up Asus V7100 gpu heatsinks. These heatsinks don't just have fins, they are cut so that they have pins. This allows more surface area for greater heat dissipation.
This card can now overclock comfortably without having to worry about cooking the ram and causing artifacts while gaming.