This is what allpar.com had to say about the changes Chrysler made to the car.
“Hidden underneath the new paint job of the 392-powered Super Stock Challenger are a lot of changes. Adding a B-pillar should provide extra strength for safety and cornering, also preventing water leaks, albeit removing the pillarless coupe treatment. Foglamps look more like production pieces, but the taillight is still a lighted tube, perhaps LED masked by plastic - a more production ready design. The front bumper sticks out more, it seems, most likely for crash testing. The paint resembles the legendary Sox & Martin cars. We don’t think the production cars will use the race-only crate 392 engine.”