This res is designed to mount to a standard 120mm fan hole screw pattern. The head is hollow and the barbs are mounted to the back of the skull facing inside the case. The head has a clear domed window cap (sans screws for the moment) to view the fluid. The pass through on top of the head has not been cut out yet for the purposes of casting.
In these images the part is about 85% complete
In these images the part is about 85% complete