Unbolting the exhaust after the resonator sounds mean when you're reving the motor in the garage to pi$$ off your neighbors and turns a lot of heads when your driving down the street. I agree that the mustang exhaust sounds good, but our MN-12's are not a mustang. I'm old school, so I like the sound of the previously mentioned exhaust. But let's face it, driving with it every day sucks! Read the threads on this site, and if you have enought money, experiment. My advice is don't try to copy a mustang, but find what sounds good to you.