Is there any quiet catback systems out there that arent real loud? It dosent have to sound stock, i just dont want one to be really obnoxiously loud and rumbly. My last car (02 GT) had a full offroad exhasut with longtubes and it was LOOOUD. It was fun for a while but got old and always drew unwanted attention (cops). This time i want a good sounding exhaust that will give me good HP gains and not be TOO loud. Any ideas?