That sounds OK, don't forget the heat shields (if you don't have them already):

http://catalog.eautopartscatalog.com/mercedesshop/sophio/quote.jsp?header=header.jsp&footer=&product=6170940220&partner=mercedesshop&baseurl=http://catalog.peachparts.com/&clientid=catalog.mercedesshop&cookieid=1CQ0J3JZ421A0MZONN