Fortunately, SMS are doing thier best to remove cheating as well as allow a route to modders. New mod vehicle adding method introduced by SMS is being tested now and all those vehicle mods will come back soon.
The "Unpacked Boot Files" is an assistant mod for adding new cars to Project CARS. When installing an add-on car mod, it's necessary that some entry list files be edited, including "vehiclelist.lst", "tyreshd.xml", "tire.rg", "hud_vehicles.xml". These files are packed in some bff files that can't be edited directly. Now we offer you a solution to that, the "Unpacked Boot Files", which has those files unpacked so you can easily find them and edit them using just Notepad.
Each version of "Unpacked Boot Files" is matched to each game version. So every time a new patch is released, we will update this mod soon.
From 9.0 we added vehiclepersistent.bff for crowtrobot's Custom Grid Tool.
Unpacked Boot Files for Project CARS patch 9.1 by Autoprophet-GF & Autoprophet-ZR.