Mopar racers,,, help me settle a bet.

[Geerhead55]

Anyone want to chime in on 440 Dusters and Demons? I've got 3 Mopar buddies that I have breakfast with on Saturdays and they were talking about these cars. Now I'm a Chevy guy and I admit I've been wrong on many things, but when I told them "No such animal from the factory," they looked at me like I was crazy. I told them in over 40 years of following Stock and Superstock, you'd think we'd run across one by now, if they ever existed. Now , I'm just a kid of 59, and these guys are in their 60s, but I don't recall one of these being offered from Mopar.
One of them grabbed his smartphone and showed some pictures of one in Lime Green with the black 440 stripes down the side, and I told him "Its got to be true if its on the internet, right?" So another tells me about the flat black hoods with the 440 printed at an angle,, and I said those were '71 340 cars.
Perhaps Mr. Norm or somebody built these,, but I'm sticking by my claim that Plymouth and Dodge never built this combo,, and I'd buy them breakfast next week if they can provide proof,, not just somebody's picture of a homebuilt, since I've seen plenty of 440 Dusters and Demons at the drags over the years,, but not factory built.
I've got faith in my Classracer.com brothers and sisters,, so help me either put my tail between my legs or stick my chest out.
I brought my copy of Muscle Car Chronicle with me and told them to find one and they couldn't,, so maybe the "authors" missed these. You think?
Sorry for being so long winded,, but thanks for any input.
Danny Durham