Any sign shop should be able to do it. Affix the number(s) (adhesive-backed vinyl) on a "block" of transparent static-cling sheet; this is a whole lot more durable than a number alone.
This is what I did for my Corvette.
I'll take the Equus over the Acura RL, but will pick the Lexus LS over the Equus; despite the much higher price for the LS.
Hyundai and KIA have gone a long way from what they were in the 1990s. Don't buy anything older than a '10 model. Honda even considers them as major competitors and has been buying and dissecting their cars for the last few years.
Ignorance is abound in this thread.