In my state, cars built before 1983 are permitted to emit 96db, later models 90db. Id like the exhaust to sound tough, loud, but still crisp, not like a sawn-off hack job. For me its all about the note, slightly less about the volume. As a person who drives his RR a few times a week, Id like to push the limits db-wise, but still ensure Im not getting pinged every time i take it around the block. Some videos Ive watched have given me a good impression of glasspacks, others less so. Just trying to make my mind up on whether I like the sound or not, and whether they will take me past the db limit over here. And if i wasn't into old technology, I wouldn't be driving no 440 cubic inch rubber-munching monster!