I've decided to "revamp" my system again and will be going a different route with my sub. So, I'm giving away my 12" subwoofer box. It's free for the hauling to the first person to pick it up from my house.
Box details: It's 3/4" MDF and yields about 2ft^3. It's for use with a single 12" sub and fits between the wheel wells up against the rear seat. It's very tall, just slips under the middle seatbelt anchor, but it's also pretty shallow and doesn't take up much useable trunk space. It'll need to be carpeted, as I've never gotten around to it.
-Colin
P.S. If you're thinking of getting the box and selling it to make a few quick bucks at the expense of my generousity, don't bother.