Thanks.  I am still confused on which seals go where.  Here are the two that confuse me.
  
 1994 Mercedes-Benz E420 Base Sedan - Exhaust Gaskets, Hardware, and Miscellaneous - Page 1
  
 Part number 
126-997-00-41 and 202-492-02-81.
  
 Do I need one of both or two of one?  If one of both then which one goes where?