Not trying to punch holes in the idea, but I just can't wrap my head around how he got a 240mm rad to fit up there without issues. The top area there is designed for 140mm fans and even stating that, they aren't spaced friendly for even a 280mm rad, In my case I installed a 280mm rad but only like two of the eight screws actually went in because the fan mounting points aren't spaced right. Without at least a modified radiator template I just don't see how a 240mm can fit up there.
Also it must be noted that without heavy modding to the top bezel a push/pull config will not work. I had to cut out the mesh and cross sections in my top bezel to fit a stealth 280mm rad without push/pull. (although after cutting all the constraints out I would definitely take advantage of the extra space and make it push/pull like I did.)