Mine runs right under a Clarion head unit. It has only once gotten VERY VERY hot. I had the heat on high and I had just gone through a very hot car wash. Even my face was burning when I got out of the carwash.

I have two 30GB drives in it right now.

I may install a fan at some future point. I've already routed the drive cables under the drive tray to make room for the fan (it would line up with the top vent holes).

I also have room in my console under where the empeg mounts to fit a fan to blow under it. Someone just mentioned this on the weekend. This would probably help with cooling as well - the bottom of the empeg gets pretty warm.

Bruno