I think I have become a Mopar snob

Ok...I think we've all felt this from time to time...at least in calling it snobbery, you're recognizing this as a not so great way to be. You get some credit there. :)

So the term "frame off restoration" may have been used in a generic way to express how far of a tear-down the car went through so he doesn't have to explain it to everybody. Why not give the guy the benefit of the doubt?

Regardless of how much the owner does or doesn't know about his car, you can't argue with his taste. It sounds like he's willing to spend a lot of money on and take good care of a Dart which has got to be worth something.