I've put about 4,000 miles on it in 2 months. Drive it every chance I get You would not believe how many people stop and take pictures!! The only noise problem is the engine noise through the fire wall. I usually have 2500 watts cranked so I don't notice it Dynamat might prove to be an effective answer to me. I've used it alot in stereo installs in the past and it is easy to install.
You have pics of the 650??