Important: ACC Update 1.8 included these 3 skins as official skins, in case you want more accurate ones I'd suggest you to use the official skins instead.
Skin replicas of Audi Sport factory teams entrant for the 2021 Indianapolis 8 Hours.
You may use the skins for public online racing if you wish. Just please don't claim/steal my skins and put proper credits as necessary
Installation:
Extract to Documents/Assetto Corsa Competizione/Customs/
In the game, you should find it under: Filter > Custom > Audi R8 LMS Evo > Audi Sport Team WRT/Audi Sport Team Saintéloc
Click on the image below for larger version.