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They look like generic after-market floor mats to me. Classic Industries has them. Here is one example... http://www.classicindustries.com/mopar/parts/me654007.html
Those are called "custom vintage" so I don`t think they are correct either. The ones you want are the one piece style which were available over the counter. The factory style ones would probably only be NOS if they even offered them and good luck finding them! http://www.dantesparts.com/floormats.html