Our subject is a 1997 Nissan 200SX SE-R. The plan is to build a large competition worthy stereo system in the car. The problem is the lack of deadening to maintain that tight uninterrupted sound. So where do you go when you need sound deadening? We went to the experts Dynamat. We contacted their highly skilled tech support team for advice on what products we need to made the dream of a quiet cabin a reality.