I got "RTSTUF" (Antique vehicle plates) for my convertible and was thinking I might eventually get something similar for my '09 RT. Like "RT STUF 2".
Regular passenger car vanity plates here in IL are not cheap, plus a big surcharge every year when you renew, so I am in no hurry!
Fortunately for Antique Vehicle plates, when you renew, IL doen't charge you any extra if you already have vanity plates, and the sticker lasts 5 years.
Our ex governors don't have anything better to do there in prison so I don't see why they have to charge a big premium for vanity plates!
I've seen threads on Challengertalk.com and Challengerforumz.com about vanity plates people are getting for their new Challengers, you might check over there to find those threads to find some ideas.