It is just a repaint of the General Lee with some headlights added and different wheels, maybe a different interior tray.
From what I have read of the Chargers in 1969 some privateers ran the tunnel back window in all races and many bigger teams ran them too in short track races but the big teams ran the flush window for the higher speed tracks.
Grille, bumper, headlights, wheels, rear window, and probably rear light panel are all wrong. This is Truxmore Torino revisited.
P.S. For more information and film on the Charger 500 in NASCAR look at the following page:
http://www.streetlegaltv.com/news/vinta ... rm-nascar/