70 RTS Duster Showcar - 340 4speed, This car was a factory concept car that was used in the Road show Caravan in 70. The body was originally customized by body man Byron Grenfeld and painted by Butch Berinza who had a shop in Northern Michigan in 1970. The body modifications were made with lead and custom made parts. The car came to me with the original custom paint. It was duplicated and ground up restored back to the way it appeared in the 70 Caravan. Read more about this car in Mopar Collectors Guide February 2001.