I've been trolling these forums for a while now reading everything i can about the P180. What i found was that you can in fact mod a fan on the bottom compartment, but on the thread there was no pictures, and you couldnt put anything thicker than a 20mm fan in there.
The improvements for this mod for me was,
Better cable management on the bottom (because it was so tight with the middle fan. And of course i just like the fan at the front

1. Open the face of the case to reveal the metal face, you will find 6 rivets you can drill through these will let you take apart this piece. (you can see the 6 i rivets (sorry no pics because i didnt think i was going to do a writeup)

2. Get a fan i put some sticky foam in the front, put the fan inside the case and screw the two bottom holes in to stick the fan. (just screwing the bottom two is very tight)


3. Get the cage, and take off the black things on top and bottom. Then put the cage back in without the black sliders and move it further away from the fan. Slide the black sliders back in and mark where the position of it is.


4. Redrill some new holes, i just drilled 4 and didnt bother with the bottom slider, because of slackness, and also i stuffed some holes up.

Here is the final product, you can see the clearance with the 25mm thick fan.

Its time for bed now
