Thanks! I was glad to find it. I guess my question is: Why are San Jose build sheets so uncommon and why did some cars get them while others (vast majority?) didn't?
I believe it had to do with the way the plant handled marking the individual subassembles (example seats in this case) At all the plants dozens of these things were printed. A couple went to the assembly line and were often attached to the car (where, how and if depended on the plant and year) as well as dozens to the sub assembly spots around the plant. These workers would look at the print out see (for example) that they needed a set of standard black Mustang front and back seats for a non bench seat car.
NJ and Deaborn we often find that the worker would insert the buildsheet in one of the seats so that the buildsheet could be read then once all were ready throw them on the belt with the buildsheet up. Once the seats got to the line another worker would look at the seats, check the number, match it to the car coming down the line and install them.
At San Jose (during this period) the workers generally would read the buildsheet, assemble what was needed, write the rotation number (upper left hand corner on the sheet) on the seats, then place them on the belt. At the car end another worker would look at the seats, read the number, match that number up with the rotation number written on the exterior of the car front and back and install them
It looks like th eseat guy that did yours through the sheet in the seat rather than in the trash like most - good find
Sorry for all the words - just trying to help - and I hope it does