So Im looking to build a box that is in my floor, so that it looks like the stock floor of my hatch, but is actually mdf w/ carpet and a 12" sub in the middle, for looks, and space saving ect. Would I just build a false floor out of say 3/4 mdf that is the same as the floor in there now and would take place of it, then just build a box with no top and slap it to the false floor and put a mounting hole in it? or is there more to it then that? I have a scion tc, im getting out of big systems and more into cosmetics/performance. Im looking at lets say a single sa12 or maybe 2 sa10s sealed off.