I went with Dynomax super turbo full body
muffs and a glaspack muff i front of the
dynomax and electric dumps to reduce back
pressure... I'm very picky on sound so thats
why I added the glaspack to change the frequency..
the dynomax muffs arent cheap(about $90 each).. also
its a 3" all the way to the bumper with the muffs right
before the bumper.. NOTE.. the farther muffs are to the
rear of the car the quieter they are.. reason is that
the gases are cooler and take up less volume which is
easier to control