Hey, just as an FYI, I sent an email to JL Audio recently asking if they were considering making a "Stealthbox" for the Vibe/Matrix. For those who don't know what a Stealthbox is, it's a subwoofer in an enclosure that's designed to fit in your car and look like it's factory equipment. They don't take up a lot of space and they match the finish of your car. Info at
http://www.jlaudio.com/stealthbox/index.html.They replied and said they're strongly considering it, so if anybody wants one made available, go to the JL site and send 'em feedback. I like 'em because you get a tuned enclosure and it's, well, stealthy. Easy, too.