While Mustangs are fun to drive, the road noise on irregular pavement and the vibrations can sometimes be annoying, especially with sportier steering – which is where 2005-2009 Mustang audio accessories come in. Getting a quieter interior is as easy as peeling off a backing and sticking some vibration dampening sheets of flexible viscoelastic polymer in strategic spots. These 12 inch square sheets can be cut to fit, and the automotive-grade adhesive sticks to metal, fiberglass, plastic, and vinyl equally well. For harsher environments, spray-on vibration dampener can withstand temperatures up to 300 degrees Fahrenheit, and can be painted just 6 hours after application. You can also upgrade your 05-09 'Stang's sound with a plug and play powered subwoofer that gives your Pony's sound system even better bass – just what you'd expect for a thunderously powerful muscle car!