Here is your answer from an allpar "insider":

"SRT rim style will be exclusive to the SRT, as they have been with other models. The R/T will come standard with 18" aluminum wheels, while chrome clad 20" wheels will be an option/package. No white-letter tires on any of the Challenger models btw. I believe hood stripes will be SRT only, but this is a feature that is easy to change at any time so it's hard to make a prediction as to what they will do. I'm sure that they have some sort of plans in place for a variety of different cosmetic "treatments" for the different models, whether at launch or throughout the model year."