Hi thanks,
Yeah I can't put side heat sinks on since I don't have 2 open 5.25 bays (well I have one open bay, but I'd rather be symmetrical and have both cooled the same way

. But I thought the side is the same as the bottom if the bottom is not covered by a card, since it looks to me like one piece of metal? (the card only covers the back half of the drives).
I just figured an easy way to cool them without modding my case would be, (I have a Silverstone LC01) to open the 2 front 3.5 bays and have air flow in there (with filters in front, and weatherstripping to make sure air doesn't come in somewhere else) and have the HDDs right there.
Would two open 3.5" slots be enough intake? (the side air vents got covered by sound dampening material).
I have a Digital Doc 5+ on the way, so I guess I could wait and measure temps to see if that is good enough, I am just impatient and want to finish my changes. I haven't even been able to use my pc yet, I'm so busy playing around with components!
