IMO: The 67's seem rarest due to the lack ( almost ) of a "Special" model. Compared to the 68 340/383 GTS and the 69 340/383/Mcode 440 GTS, the 1967 year only had the late year addition 383 GTS in its lineup. The more mundane the model, the more they get used up in everyday driving. Also, who restores a Dart270 compared to the number of guys willing to restore a 383 GTS? Same reason why you don't see many Valiants being saved. Not a "special" model in the line up. As far as their value???? Like said before, it is a subjective thing. The GTS model is rarer than a RoadRunner or most E-bodies. But which pulls in the most money? Isn't the A-body. They are under-valued, and under-appreciated, for sure.