Thanks thuglife I've X'ed out flowmaster because it sounds just too ricy if you ask me. I'm now down to bassani and magnaflow. If the bassani exhaust sounds more like a european race car like some of you say it is I'll go with that. Does an 04 stang have a good security system?
There is basically no way you can make any american/japanese car sound like ferrari/lamborghini, especially a V6 mustang. I have never heard a V6 Mustang sound anywhere near as good as other sixers: G35/Supra/Skyline and those are much closer to Italian Sportscars than most. Im not saying that some V6's Mustangs don't sound good - they are just a different kind of "good."
Just as a guideline for Italian Sportscar (although a few are German) here are a few clips:
I agree with Red98 about not arguing- but I love mine stock vs. w/ exhaust. How come you never floored it in the audio clip? Under throttle with gas down they probably don't sound as good as they do at idle or mid throttle mid rpm revving.