Could you give me the following dimensions?
A: Max dimesions the motherboard tray area
B: From the top of the case, on the inside, to the edge of the motherboard
C: How wide of a rad can fit down there?
A. From the back slots to the HDD plastic piece that covers the hot swappable wires is 362mm and the plastic cover is 31.75mm wide.
B. I am not able to get a good straight measurement, but this is what I posted earlier. I have the EK RAD that is 47mm thick and I have 25mm fans attached to it. The remaining space I have is 34.9mm to the top of the motherboard. Adding that up, it gives you 106.9mm give or take.
Here is a closer pic.
C. As my post just above, My EK RAD fits just fine in the bottom section standing on it's side with a mm or two to spare. The EK RAD is (LxWxH): 276 x 123 x 47mm