99 E300 Rattling Muffler

[dieselgal]

Where the exhaust pipe enters the muffler a crack has formed from rust. I probably have a few weeks before the entire muffler falls off.. And to make matters even worst it has created the most annoying rattling noise.

I need to replace to following:
3 rubber hangers
1 center clamp
1 rear muffler

Would you recommend replacing the above with Mercedes parts or non-OEM parts such as Bosal or Eberspaecher?

Are there any other parts I should purchase?