There is no PERFORMANCE to get out of any exhaust for a diesel...
I own a C class diesel with a sport muffler (for the look of it) and can honestly tell you that you better buy some tips and retrofit them instead of buying a complete muffler.

greetingz,

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1990 300SL-24
1993 C250D with a minor 600+k kilometer
www.MBenzNL.com(the Netherlands)