The latest all-American pony car gets a big dose of horsepower and major technology enhancements, all packaged in a new sleek and sexy body. Sadly though, the stock audio systems just can't deliver enough bass to keep up with the Mustang's high-performance muscle. Our Stealthbox® features an all-fiberglass, sealed enclosure design that fits in the same location as the optional factory subwoofer (and requires no holes to be drilled for installation). Equipped with our revolutionary 12TW3 thin-line subwoofer, this Stealthbox delivers deep, powerful bass that's worthy of your Mustang's heritage. The Hard Data: Contains one 12TW3-D4 in a sealed enclosure. 400 watt power handling. Wired for 2 ohm mono. Installs in the passenger side rear corner of the trunk. Factory subwoofer (if equipped) must be removed for installation of Stealthbox®. Installation in Mustang Shelby GT350 models requires relocation of additional OEM equipment. Will not fit convertible models!