The Challengers are current Trans Am cars. Trans Am series has been sharing weekends with historic/vintage race groups for a few years now.
The Challengers run in two classes, T/A, and T/A-2. The T/A-2 cars are my favorites, they run against camaros and mustangs with a spec chassis and tire.
They use a lot of circle track components to keep costs down.
The top class is T/A, more power, more tire, more aero aids, really fast!
If you get the chance go to an event, the racing is great!
The Charger runs with the vintage race group, old cup cars are a relatively cheap way to go fast, and much fun to watch!