Version 1.0 includes four liveries for Arciero-Wells Racing( including two alternates for the #24) and four liveries for All American Racers (including two alternates). Overwrite everything in the Automobilista 2\Vehicles\Textures\CustomLiveries\Overrides\cart_reynard_98i_toyota folder!
To use the AI skills and driver names you'll need to manually copy/paste the text into Automobilista 2\UserData\CustomAIDrivers\F-USA_Gen2.xml as I didn't want to overwrite the existing file.