Member at FEP posted a pic of the door tag from his 1983 5.0L GL coupe.
http://vb.foureyedpride.com/showthread.php?t=149502
DSO = 110125
The VIN is in the VIN Project in a group of four. Ran AC reports on them and the original state they were shipped to is unknown but it looks like MA.
Perhaps a four-car evaluation by the state of MA for the 1983 model year?