flowmasters...

ok the bullitts as you all know come a little louder than the gt (stock). ok i have one simple question...i want my bullitt to be louder than what it is already. all i want to add right now is a muffler to do the trick. would flowmasters be what i'm looking for, will flowmasters by themselves make my bullitt louder than what it is already. if anyone has an answer to my question email me at [email protected]