I picked up a 2014 GT yesterday with Flowmaster Outlaw mufflers. It is way to loud for a daily driver. I can't even hear myself think with the windows rolled up and cruising at 60 mph. I'm thinking of going with Magnaflow as that is what I've had on my two other Mustangs in the past. I want a muffler which you can hear a bit in the car when on the throttle but is quiet when cruising. Suggestions?