Duster 71 tail lights on 72 model?

I've been keeping my eye open for a nice Duster. I prefer 70 and 71 models. I have come across a couple of Dusters claiming to be 72 models but have 71 tailights. Does anyone know if Plymouth made some 72 models with 71 model tailights? These have 1972 vin numbers and 72 side marker lights but 71 tailights.