edit~ wrote too much so underlined main points >.>
i probably should have taken a closeup before picture, it was a bit of a bother.
The case comes with two fans already screwed to the top. for some reason they aren't even seperated by what seems a standard distance for... i dunno every radiator on the planet. And for some other reason there are depressions for the fans, so the top of the case sinks in slightly in parts. On top of that there is an ungodly amount of screws in the top of the case. It's actually a bit ridiculous. So its already drilled like swiss cheese. Thats not mentioning the behive fan grills that were actually machine cut into the case, instead of screwed on for easy removal.
And even though thats the case I think only 4 of the 10000 holes actually lined up. And if you want to put the radiator in there is only 1 place on the top to fit it properly and still have things go back together. Not that difficult to find if you just move around the fan grill a bit. Two screws i had to drill into a sloped surface, it was a bit awkward but it worked fine with a hole punch to make a small dent and good drill bit.
So yes I had to drill i think 8 holes, as well as cut out the top of the case.
one warning, depending on your motherboard you may or may not be able to mount one fan on the radiator. Because of the copper heatsink on the top of the p5K deluxe there just wan't enough room for the fan to mount. Luckily I got the dq6 at the same time as i started all this, and theres no irritatingly useless copper heatsink at the top, as it apparently served no purpose anyway.
I dont know if you can tell from the pics there but on the dq6 the fan is actually touching the CPU block. 0 space. It isn't blocking any air per say because its just a small part of the fan casing thats pressed against the screw mounts. Not very hard, just snugly. I was lucky enough to be able to sqeeze it in. You lose the two top drive bays as well. leaving you with 3. Now if youre sticking something short in the top two itd work fine, as the rad only sits in about an inch or so too far for a dvd rom. like a fan controller/card reader and all that lovely stuff.
IN summary, Great case, i love it. It just takes a bit of work because the designers were on crack.
Wire managment works, but was designed VERY poorly, only because the door latching system is ballocks. As is the usless vertical bridge they created that effectively seperates it in half. with all the cables routed behind I had to remove the soundproofing foam, and route the main atx power cable in a very odd way, because they put a raised border on the side panel that conveniently covers the hole meant for wire managment.
I dunno its an awesome case, you just gotta mess with it a bit. There's not a whole lot of room to play with when using a 120.3 rad but it can be done. Having all 3 fans is motherboard dependant. if theres no Huge heatsink near the top edge of the motherboard you should be good. it'd be really nice to not have your CPU sitting right on the edge either.
Also note if you have a fan controller with knobs the front door cant close. So i removed it. May have already said that but it doesnt really matter. I like the look with or without the door. And now its less hassle.
What you need: Dremel, drill, screwdriver, patience and coffee. A jigsaw might work but I believe the case itself is steel, not aluminum ^^ So it may not work. The side panels are alluminum and the casing I put in one of the first few pics is plastic. The rest is all steel.