the state of Florida says any modification to exhaust systems is illegal, any exhaust that is louder than stock is PC for a stop.....will you get pulled over for it most likely not but get the wrong cop on a bad night you just might get stopped.
I've never been pulled over for my exhausts, they are always loud. I can't think of a time a friend has been either and theirs are even louder. Never even is it mentioned after getting pulled over for some other violation. Just my experiences, FL is very lenient with exhausts.