that came out nicely if i were you not sure if you did but double up or triple up on the exhaust and differential. wheel wheels also these will have the most due to moving parts or muffler drone.

also i would look into doing the spoiler area. i did it since it picks up some noise from outside and due to bass rattle when the sub hits. i removed the entire spoiler and did the hatch. in the srt it might not be as necessary as there is not moving parts but couldn't hurt.