I just picked up a 21 rebel w 5.7. I am planning on replacing the muffler with either a carven or a b2 fab. I live in a subdivision so my only concern is sound. I dont want to replace the muffler with the b2 oval. I was thinking either the carven set up or the round b2. Has anyone done a comparison between the two? Im looking for something thats not super obnoxious but I would like some sound. Thank you in advance for the help.