The only trim change to identify 1966 and newer (up till today) is
the GMC lettering under the grill.

1965 and earlier the letters were in script form.
Starting with 1966 production block letters were used, and still are.

Hope you enjoy your new truck


1 1955 Chev one ton. 261 engine

3 1962 Chev c-10 261 engine
4 1966 Plymouth VIP 5.7 GenIII Hemi
5 1966 Imperial Crown Coupe 440 engine