@pdf27 - Yeah, the radiator can, as far as i can tell, be put the either way around, its just a matter of tube length, so it shouldn't really be a problem. But also, as bagman says, i can just detach the radiator when i prime the system and put it upside down to get any air bubbles out of the system, and then again when/if i start to hear glugging noises. The tube ports are on the lower back of the casing, so it would be nice if the fittings were there as well And yeah, i know the less bends the tubing has, the better. The "s-bend" will be more like a common bend ( like a C ), its just hard to illustrate a bend going towards your point of view in a 2d enviroment. About the harddrives, i can probably move them up another notch, yeah. The big problem then would be that they would get hotter, since theres no fan in the top drive bay. But i guess the ambient air temperature inside the case will go down with the watercooling running, making this a non-issue. HDDs usually doesnt produce much heat, to my knowledge. Pictures are appreciated!