ok i insyalled flomaster on my 04 gran prix
i used the Deltoflows 50 series on my GP
i have 2 clips one id the stock system the other is the Flowmasters,they sound awesome, not to loud inside the car and deep tone outside... go to this side and u can hear the sound clips, yeah and i know everyone thins when you hear the word flowmaster its going to be loud,, but everyone forgets flowmaster makes different mufflers..
http://board.moparts.org/ubbthreads/showflat.php?Cat=0&Number=2317039&an=0&page=0#2317039