Rockford Fosgate and Saleen, Inc. are proud to offer high-performance audio upgrades available now in Saleen Mustangs and the S331 Sport Truck. The fanatics at Rockford Fosgate deliver an outstanding audio package for both vehicle platforms, which bring the performance level of the audio systems up to the standards required to wear the badging of these two icons, Saleen and Rockford Fosgate. Designed from the ground up for the Mustang and S331 Sport Truck, these audio upgrade kits give the system PUNCH and integrate perfectly with the factory audio components.