Phoenix Graphics is a Moparts sponsor, so it would be worth a phone call to see if they do custom stuff (website on the "sponsor" page). If that doesn't pan out, try your local sign/graphics shop. That's the route I usually go when I need boat letters, etc... Just for example, check out the link below and the type vinyl they have. I'm not suggesting you use these folks, just using their website as an example. I'm sure your local guy can do the same thing. Mine can do multiple colors, shadowed lettering, etc...
https://www.signspecialist.com/lettering/windowlettering.html
