dynamat extreme is great, unlike the original dynamat that cracked and peels of after going through midwest seasons of freezing and cooking in the sun, dynamat extreme stays on. if you have a budget there is a accumat available at walmart, i had a buddy use it on his turbo sundance and it kept that hatch from rattleing

 

haha i went ghetto too, i got one of those foam things out of bike helmets, and shoved er' back there haha works good. the roof also rattles so i went ghetto AGAIN and stuck napkins under the roof liner haha. and yes dynamat extreme rules, got it on my licnese plate, works awesome. too bad the LED in my spoiler rattles real bad too but its weird cuz i stuck mounting tape under the spoile where the led goes, like i covered it, but it still ratles, so thats gay.