muffler choices.

Along with these other suggestions, think about these two.
1) Call Joe at Waldron Exhaust http: //www.waldronexhaust.com/ and ask him to build you some perfectly sized and shaped Imposters, they flow better and are only slightly more rumblier and louder than stock without the annoying drone typical of aftermarket chambered mufflers.
2) Look into some of the 18", offset center (stock sized and shaped) Goerlich XLERATORS. Great mufflers that flow a lot of air and cut out a lot of sound level and sound sweet.
Tom