That's kind of depressing, I looked up this link
http://caaarguide.com/id962.html from a different Mopar forum and these folks at least give the possibility of a 6 figure 1970 440-6 Chally. Granted, the car would have to be a "10" according to them, and I admit, I do not know who these folks are, or what their experiences are in car valuations, but from previous BR, Mecum etc auctions I have seen over the past few yrs, I thought a 6 figure 440-6 Chally is doable