That plastic liner is where I put Dynamat on mine for the front. It helped a decent bit with noise. Just be careful not to cover up the mounting holes as I accidentally did. I just poked through and all was fine though.
__________________
2013 Ford Mustang GT
374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd
|