stopped at radio shack he said i should just make boxes forthem cuz i would have to take the whole rear apart, and silicone the whole rear he said if i did that i might as well just get a new car so iam just going to make boxes.

 

let me know how that works out and how hard it is

 

My best suggestion would be to use some kind of sound dampening foam. You can get it at most car audio places, and it will reduce road noise, so your car will be quieter when you drive, and will have less rattles.