There will be a VIN sequence number stamping is on the upper drivers side package tray sheet metal (not easy to get to, requires removing the cardboard package tray etc.) and another one on the upper core support to the drivers side of the radiator. The same numbers will also be stamped on the engine and the passenger side of the transmission. The door decal, the fender tag, and broadcast sheet also contain the VIN#.

Duster VIN Stamp Package Tray.jpgDuster VIN Stamp Package Core Support Burried in Primer.jpg