This is going to sound strange but I'm wondering if there is a performance exhaust that is quiet? I currently have Magnaflows and they sound great but I will be spending a lot of time in my car (starting a new job with a lot of tri-county travel) and will be on the phone more in the car also. My Mustang is a vert and so I'm thinking if I could get a quieter set of mufflers that are more like oem but will let the car breath I would consider it.