Ah, thanks. Anyways I tried a new model for FBI and still have the same issues, gonna try and get rid of added and see if stock works.
EDIT: looks like even with the stock FBI2 my game crashes, any ideas? BTW i'm on epic games version.
EDIT2: found someone on these forms that said to revert vehiclelayout.meta and try, so i did and it seems to fix the problem so far (fingers crossed lol). I had changed it for a bearcat truck.