Example in the Vin Number , 434371Z132619, for my 1971 GS,
WHERE:
The First letter designated, 4 = The Buick Division
The Second, and Third Letter,
designated on the VIN/ 34 = The Series, GS (1971)
The Fourth and Fifth, Letter,
37 = Body Code, A Two Door Hardtop Coupe
The Sixth Letter 1=...