Its kinda a sticky area... With Low-production T-Shirts and Posters and such Ford isn't going to waste their time for the most part... Not to mention I am not entirely sure "BOSS 302" is Trademarked. If it was, then we would all be in trouble, not only for license plates, and other "small items", but for taking a photo of our own cars and selling them or "Giving them away"... (Technically, Ford owns the "Sheet-Metal Likeness" of their cars)... So if you took a photo of your car, and sold it to a "Stock Photo Company" or a Movie Studio, you could get in serious trouble.
That is why with 99% of the stuff I do, I use "Creative License", I change things, or modify things...
Even with the "Custom Posters", I am basically selling the "Design", not the photos, because they are of "Your Own Personal Cars"...
Also why on the Identity Plates I don't have the Ford Logo anywhere....
Doesn't mean I can't get a call from Ford... But I am doing this stuff for the "MASSES", only for BOSS Owners...
As far as the Challenge Coins go, I would need to design something up, and get a quote from my production company as to how much it would be... The Coin would 1 design for the front and back... as its expensive to make the "Press-Die" for these things...
It could be something that we can simply do those "Plastic-Coins" that companies do all the time, Like "Poker Chips or something"... A lot less expensive to produce... but not the same "Coin Quality".