I have a question: can I put DC headers and an axle back muffler on my xB and still have it quiet enough that my neighbors won't know? I don't live in the nicest neighborhood and I don't want to announce to all that I have modified my car.

it all depends on you...
it is quiet if you don't floor it. it will be a bit louder than stock, but not like a straight pipe...

see if someone is selling the dc sports one from the RS 2 with the silencer....