The covers ain't covers but Screaming Eagle street shots. They just didn't have the end caps in but now they are complete. Gives a super low sound, not too loud but very much there!
The dealer is not telling. They made a set themselves, including a nice bracket and sell it as an accessory. But on the second pic you see what could be the part nr
What dealership did you get that from? I was in amsterdam for work last month and looked for a dealership but google told me they were all closed. I'll be over there again in April so I want to try and make a stop to check it out.