Bark too much for bite! Which Muffler?
Another option is to use extremely quiet mufflers and dump them before the axle or go all the way out the back. Then install the X-pipe and a set of cut outs on the front. That way you can have total adjustment of your sound.
When in the neighborhood you shut the cut outs completely....want a little sound? open them up a little bit. Want to blow the chevy guy sitting in the car next to you out of his seat? Open them up all the way and mash the throttle.
I don't think this is what they mean by a tuned exhaust but it should be.
Mop