340 Wedge?

AFAIK, all 1971 Duster 340 packages, with the exception of options, used the same mechanicals. I believe that the production #s you list are for those that came with the 340 Wedge callouts on the hood. I think the code was V21 (Performance Hood Treatment).

As far as being special or rare, I would have to say that the 1971 version, with it's sharktooth grille and performance stripes, makes it one of the most desirable of Dusters, with or without the performance hood. Obviously after 20 years of ownership.. you agree to!