v6 mustang exhuast upgrades

Hey wuz up everyone. I just bought a 97 v6 mustang and I want to put a bad ass exhaust on my car. What is the best exhuast system I can put so that my stang rumbles loud and deep when i'm just cruising and rumbles even louder when I want to to punch it. Is it nessessary to change everthing from the catalyic converter back when i'm putting on the new exhuast or can I just change the muffler and add the dual pipes. Any help I can get is welcomed. thanks

I say best you can do is get a true dual system

from what i hear a h-pipe and a chambered muffler (flowmaster, spintech) are the way to go. 1 chamber being the loudest. If u leave the cats on, it wont be as loud, but then you have to put the cats back on for emissions (if u need them there)