There is one piece of dark styrofoam behind the arch liners. I removed that when I worked on my car a couple of years ago. But I never could figure what location it was positioned in. The left front of the engine room perhaps?
I still have that part in my garage... in case I by some wonder figured out where to put it
The clips holding the headlights are NLA, I believe. I was not able to get all four when Audi replaced mine (2017). They had 2 or 3, can't recall for sure
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Johannes
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Audi S8 -99, Pearlescent, Alcantara/silk napa leather, Burr walnut insert, Alcantara roof lining upper pack
A8 32V engine
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Jeep Grand Cherokee -98