I just purchased a bulk package of dynamat extreme to use in the trunk area. Not sure how much different this is to what you have. Supposedly, this is the best stuff to use for deading sound. I have yet to install it, but I bought it because I recently did the exhaust and it is pretty loud. Sounds great, but on the highway im getting some drone around 70-75mph. So.....when I finish, I will take some pics and give you my opinion on the difference.