I built a custom fiberglass enclosure with a 10 MB Quart Reference DVC sub in it. Wanted good clean bass but nothing too loud to where you can hear me coming down the street. It mounts directly behind the factory soundbar and follows the contours of it. It does require cutting small slits in the rollcage padding and some selftapping screws into the rollcage. I've had this in 2 different wranglers and its awesome. Also does well offroading as far as flexing goes with the rollcage. I just got a 01 Cherokee so Im thinking about selling this if anyone is interested. I'd take 300 for it. Well over that much just in time invested in it.