For those of you looking for a subwoofer enclosure, wlaurent has come up with a great idea. Take a look at his thread in the electronics section. The enclosure fits in the side panel of the trunk and takes up very little room. It is somewhat similar to the MTX Thunderforms. It can be removed in seconds if you need the extra room. I have been using an 8" subwoofer (in a Q Logic box) for a year and it provides plenty of tight bass. If this isn't enough, you could probably put one on each side. This board never ceases to amaze me with one great idea after another.