Interior Sound Reduction

Hey everyone,

Been awhile since I have visited. Glad to see the site is still up and running. Well I got a question. I have seen 2 Honda Civics with this problem, mine one of them. The interior seems to attract a lot of rode noise from outside. I have dynomated the flooring of the car (under the carpet and all obvious places). I went to autozone and bought some rubberizer sound reduction spray, but not sure how much help it gave. Does anyone, or has anyone had this problem. Its kinda annoying to have to raise your voice while going down the road sometimes. I was thinking about a total underbody coating, but havent researched prices for that yet. Any hints or suggestions are welcome. Thanks a bunch and good to be back home