im just gonna go ahead and make this simple.
first. use the search function, you wont even ahve time to read all the info on this stuff.
kooks long tubes headers and high flow cats
corsa catback exhaust if you want a tamer exhaust system that roars when you open it up, no interior resonance.
slp loudmouth 1 if your want a viciously loud exhaust that can get annoying to the kids and wife, or just you if you are one of the folks who is easily bother by some cabin noise.
Exhaust and Header combo comes down to what you are looking for first... Once you know what you would like, we can all assit you in obtianing that. Feel free to call me directly too. We are a supporting vendor in Fredericksburg, VA (close to you) and can help you with your mods on the charger!