I am an old fart ( 56 ). My aims would be for more hp with the suggested modifications over loudness. I am willing to accept more loudness ( if not too loud ) for the added hp. With the mods commonly being put on ( ecu tune; CAI, and ASP pully ) how much more hp are you going to get with headers/ exhaust modifications? I am not willing to pay $1500 or more for these modifications for a 5 hp gain. It would have to be at least 15-20 hp gain to justify the costs over the above mentioned modifications. The best hp gains are with the three mentioned mods perhaps with the addition of the resonator removal. Let's see what you can do with your purposed mods.That is my two cents. Will follow your posts with great interests.

Dennis