Yeah I wish that the ports ran into the cabin, but just the box has two ports. With 600 watts powering a 15" sub, I create a lot of air outta the ports, so I would think running the ports into the cabin would be a fantastic idea, just to eliminate some rattling. I've seen a round light '02 at last year's Fest West X with a bandpass enclosure with a 12" MB Quart sub with a clear plastic port running into the cabin behind the backseat. Very sweet, if you ask me. ^_^ But I'll stick with the plan to build a sealed box.