I'm intrigued by the dynamat, it really that made that big of a difference?
100% Dude I am not kidding, I am currently just to list a few mods, CPE Passenger and Trans mounts (NVH is real with these guys lol) lots of bracing both from and rear. Vibra Technics RMM because CPE as out of stock lol. About 5 braces in total if I remember correctly, removed the spare out of the back and everything else in it. Rear Muffler deleted and a sound system, all components plus rear sub that weighs 45lbs by itself and the difference in sound is UNREAL.
I never realized how loud my car was until I put that sound deading in the back. I guess I never really thought about it, I knew I had rattles but with those rattles comes a lot of increased noise and I just never put the two together, is what it is. But when I cranked the motor for the first time after putting the car back together I couldnt believe my ears! Even to this day, I notice it right away like I can't believe how much quieter the cabin is compared to what it used to be, hence why I will be doing the rest of the car in the near future. I honestly don't think you will regret it. My two cents ✌️