I know...I just wanted to note that I looked in to it and with out some decent fabrication it's a headache. The air space isn't a big deal since there is over 1 cubic foot of space in the cubbies, but the physical dimensions of the sub would start putting you in a position where you have to build out of the cubby to make it fit which means you are pushing the seats forward or you are cutting up the cubbies, or getting rid of them all together to build boxes behind the seats.
Well, in that case then sir, thanks for the info!