The digits are not on a plate, they are on a grill. So if this wasn't on the car (license plate without vehicle) would it be put on the site? Would you just have the numbers or would you have the grill with the numbers on?
If the numbers were loose then no I don't think they could be uploaded as it could represent any sequence. But if the grille was removed and the numbers still attached to it then I don't see why it cannot be uploaded as this was how plates were often displayed on sportier vehicles back in the day