Very little. He took it off soon after he bought the car. Sitting in his garage for years until yours truly came alone and bought it. Since then it has been wrapped in plastic in my garage until needed. I sold my Limited hence the sale.
If u don't mind me asking are you needing to pass emissions or just for a visual?
I'll admit I don't know the laws in every state but by putting antique plates on the car you shouldn't have to worry about any of that any more?