Well a few days ago I decided to start cutting for the top heatercore. It was just a bit too thick and because of that I had to mod the case a little. The case has an internal only 5.25 bay which is useless unless I buy a hard drive cooler or cut out the back so I can put a CD drive there so I got rid of it.
Its got a bit left but I plan to use a hack saw and save some time over the dremel.