Here is a Link to some Mopar codes:
There seems to de a code for Rallye Challengers.
A57
A57 F-Body Road Runner or R/T Package, Monaco 500 Package, Cuda 383 Package (69), Challenger and Charger Rallye Package (72-74)
I'm not 100% on that, maybe other readers can expand on this.
As far as the accent stripes, the only other stripes I could find were the ones that go from the front fender to the base of the B pillar.
I have a LINK here to a red Challenger from a 1972 brochure... If I remember right these may have been painted on also.