I plan on getting headers eventually and air intake mods all the way to the intake manifold. I believe the stock exhaust on a 2012 Challenger srt8 is 2.75.....sooooo should I go to 3 or 3.5 inch cat-back exhaust? I want a louder start up and more aggressive sound when I rev but at the same time I don't wanna set off car alarms when im casually driving by parked cars. I had an axel-back on an Integra Gsr I owned when I was a younger and on long trips the exhaust sound annoyed me after a few hours of driving. What do you guys think is my best option? I have mostly been looking at magnaflow and flowmaster.