Has anyone used Hushmat or Dynamat sound deadening material in a Coupe, to reduce rear road noise? If you have any experience with these two materials, or any other, pro or con, please let me know. I'd like to put the material under the carpet in the trunk area. I see there are many different brands on the internet, just don't know what works and what doesn't.

Thanks,

Jim
jpmlholian@aol.com