I hope I'm posting this in the right place. Alright, here it goes... There have been two vehicles that I tried to put in my game (unmarked Crown Vic and an unmarked Impala). I followed the directions to a "T". The end result was the impala had black Windows and a greenish, blue body color (the wheels looked like this as well). The Crown Vic was white, except at the bottom was a red strip, the interior was red and white. Can anyone help me out? I am fairly new at this and I'd like to learn (it's a good stress reliever lol). 

It would be hard to tell exactly what the issue is...I'd try installing the stock cars again and reinstall the modded ones, making sure you are replacing the cars in the correct slots and making the appropriate changes to the vehicles.meta and carvariations files!