67 chevy
7B111876
10/13/66 <build date <10/27/66...The rear axle has a 10/13 date code. I think the last digit of the "date produced" box is a "7." Is it possible the build date and the invoice date are the same date?
72 chevy
2S144890
12/71
72 chevy
2J174846
7/72 - the last 2J1 on our list currently
72 GMC
2S506052
11/71