ya... i used the really long heatsink from the ttp and i put some enzotech vram sinks on the other 4.
i think my vid card gpu temp is around 66c and my vrm temp is around 66c also. this is from testing using kombustor.
i plugged it into the card header. i've used a custom fan profile on sapphire trixx.
i've also changed the vrm heatsinks to enzotech mos-c1. not sure if it was really worth the $11, but it dropped the load temps around 1 or 2c's.