I did a mod like that on my own file server that I keep in my basement. I moved the harddrives into the two 5.25" bays, secured them on by 2 screws on the right side of the bay (the left side just hangs out, but theres no stress on the harddrive because the whole case is on its right side so it kinda just sits there) and i put a 80cm fan infront of it to cool it off ^___^