I currently have a RB header and presilencer w/ some restrictive, stock mufflers. I really want to improve the performance and sound w/o making it obnoxiously loud. I really like the way the racing beat mufflers sound, but they're too quiet. Has anyone ever used just one RB muffler before the Y pipe w/ this setup? I think it might give me what i want, but i'm not sure. any clips or suggestions would be much appreciated. Thanks