Just a few pics of the inside with the watercooler mounted. The CPU enclosure is Michiels idea
, and it works great! No need for clamps, just put the CPU with insulation inside and put on the lid:
Notice the white cord in the picture below. That's the one from the thermometer, and the probe is mounted inside the coldplate. The gray CPU enclosure is a project box for electronics. After this picture was taken, I've also mounted hose clamps to further leak proof the cooler construction.