There are almost as many opinions on this subject as there on what oil to use. But since you asked...
If sound is your primary goal and you don't want droning in the sweet spot, I'd suggest a Fabspeed Maxflo exhaust and secondary cat bypass pipes. Headers are tricky on these cars because of the O2 sensors. Get one without cats and you'll probably throw CELs. Since performance seems secondary, skip the headers and enjoy the symphony. That's what I did.
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