Muffler's Neck Broken

Muffler's Neck Broken  
the micra suddenly sounds like fart and i can hear loud metal knocking sound every corner...

turned out that the muffler broke around the nexk due to rust around the welding area, and the pipe fell off and hitting the rear axle...

so i drove to Unique exhaust and got a replacement one for $80(installed) straight thru muffler, replacing the old offset muffler...