I saw a slant six 70 Charger in a PA junkyard about 20 years ago. Only one I have ever seen. The upper door panels were steel like on a Belvedere, not sure if that was factory or if they had been swapped but the car had essentially no options. I should have taken the tag. I also know of a 71 Barracuda with the low horse /6, very rare animal. Don't remember if either car had a stick.