If you have the premium 10-speaker system (door mids and tweeters, sail panels, and hatch mids and tweeters) then you do have an amp - that "module" in the right side sail panel below the speaker next to the rear seat cushion is the factory amp. If you have the base speaker configuration (4 speakers - doors and sail panels only) then everything is powered of the head unit and there is no "module" in the sail panel.
White 2000 Trans Am (sold)
White 2011 Mustang Convertible
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