For my 8"s that are going to arrive today (hopefully) I am planning something similar. I am going to raise the floor about 4" so I can put the amps above the spare tire. Then I am going to use the left over space on either side as part of the sub enclosures. I plan to seal all but an opening in each corner. Then I will build fiberglass pods that cover the enclosure to hold each 8" woofer and one of those flex tubes they sell at SelectProducts. The result will be a very small-looking fiberglass enclosure...with big ported sound.Poseur said:I am however still having problems getting the idea out of my head to make something similar but slot-ported with a port that runs under a false floor. We'll see how motivated I am to get that taken care of, but that might turn into something seriously interesting...