Man first you have to finish the exhaust with tailpipes. When they dump like that it resonates and sounds terrible. A full exhaust is much more refined and has a much better sound.
I agree with this too......although, I DO like mufflers that are dumped under the car, I dig that resonance but you need to have quieter mufflers. I'm running hemi mufflers dumped before the rear axle......with my cammed 340, it just sounds bad-***......sort of whispery and raspy.