I was thinking about making a false floor/amp rack for my trunk (99 Integra GS sedan), like many of you have, but I just want to make sure that the amps don't get to hot. I am running a Rockford Fosgate 400a4 and a Rockford Fosgate 250a2 (I usually don't push them that hard). How much room do these amps need to breathe? Do I even need to be worried about them getting hot at all? Do I need to have some sort of air circulating under the top "floor"? Thanks for your input.