I just installed the 360 into my Core P5 case. The height is exactly 16 inches with the plug in the bottom or 408mm. 5 inches (127mm)wide and 3 1/2 inches (88.9mm)deep including the fans mounted to it. I bought the Pacific RL360 kit http://ttpremium.com/product/pacific-rl360-water-cooling-kit/, so the fans are the riing 12, there are 3 of them.
The height at 360mm is not including the intake and output on the top of the rad. 360mm is the size of the actual rad itself for cooling.
Hope that helps!