Anyone sitting on info on what VIN distinguishes the 1992 model from the 1991

For the 1993 model-year I know the breaking point is BK06430. But what about the 1992? Searched the board a few times but could only find dates, not the exact VIN. For the "Euro" M5 3.6 the 1992 model year starts in 9/91 with GD55100.
Greetings from Sweden