If you want to watercool the NB, than just replace all the crap Asus has put on the board.

The mosfet cooling and the NB/SB cooling are seperate pieces, so it's easy to just remove the NB/SB cooler and replace that with waterblocks.

I did this last week and it works great

Heatsinks/heatpipes removed:


Current setup (Asetek waterchill NB block and Microcool Northpole SB cooler):