Just an attempt to create the classic livery, but on a modern car. Some creative freedom is taken!
Choose a car in game. Click tuning/customize, and "create dir".
Find the created folder in: Steam\steamapps\common\rFactor2\UserData\player\Settings\RSS IMSA Mazda RT24-P\*Name of the car*
Paste the dds file there, and choose it on tuning/customize in game
Choose a car in game. Click tuning/customize, and "create dir".
Find the created folder in: Steam\steamapps\common\rFactor2\UserData\player\Settings\RSS IMSA Mazda RT24-P\*Name of the car*
Paste the dds file there, and choose it on tuning/customize in game