Post-Facelift bumper question
 

New guy here... I bought a 2011 A6 Avant S-Line that was in a front collision and am wondering if all 2009-2011 A6s shared the same bumper skin? I've been doing some research and it seems like it didn't matter whether S-Line or non S-Line, the part number is coming up the same? Also, the square fog lamp grilles, are they interchangeable then with the round fog lam grilles?

The reason I am asking, is that I am searching scrap yards and find that the bumper assemblies with square fogs are easier to find and much cheaper than with round fogs. Also nobody is stating whether the bumper assembly is an S-Line or not. Just want to know what my breadth of search is, and that I get the right bumper from the get-go.

Sorry if these are rookie questions, but heck... that's what I am :)