Well, that is something else... And they're, like, ultrathin flat things, you can actually move around? Or are these just shading domains? Adding depth or bevels then would be a bit more difficult then... If you want depth, then, you would actually have to make it. Or remake it, in this case. Replacing the 22-XP-JV stuff with a Text object for instance. Did you model it yourself or did you buy or find it somewhere? Because I think there is a big chance you have to leave it here, to keep things simple. And to keep yourself from getting bored with this car.