This was done last month, but I didn't had enough time to release it. It's the Mild Seven Nissan Primera livery which are completely inspired by Mild Seven Benetton cars with the actual sponsors used on the Benettons.
Extract the "content" folder into the game directory where your Assetto Corsa is installed.
Nissan Primera BTCC - Mild Seven 1.0
Inspired by the Mild Seven Benetton cars