Put the heatercore up at the top were the PSU noramly, make a hole for the out going air of the heatercore. Then put the PSU in the front of the case where those 2 drive bays are. Your gonna wanna take the plug out of the PSU nd relocate it on the back of the case. Then if u only have 2 5.25" drives u can if the eheim in the other open 2. If thats not happening put the eheim on the bottom of the case in front of the PSU.
