For vanilla cars, it can either be the additional modification or the license plate design slot. On my cars, it will be a separate slot that has it enabled by default, but you can disable it if you so please.
Hey there is there any progress on the mod yet just curious. Cuz know one has posted anything yet about the mod.
Focusing on some other mods right now: Gen 6 v1.3, Blowover mod, and the Modified Stock Car mod. Once those are done, I will continue some other projects, including this one.