Whatcha got there would probably help with high frequency sound control. Dynamat helps with panel vibrations. For total control you would probably also need something like Luxury Liner Pro, which is a closed cell foam bonded to a mass loaded vinyl, which helps control low frequency tones.
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2013 Ford Mustang GT
374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd
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