Sorry, it's the 67. I assume that "1" like in the case of seatbelts is the basic model and black in color. but under the convertible top is "G" glass? the Tire is size "C" and type "1". and so on.
Thanks for posting a copy/picture of your buildsheet
The "G" in B36 indicates a glass rear window in the convertible top
In some cases there are codes in one section of the sheet that relate to information elsewhere. Guess Ford believed or found that it was easier for workers to find and remember a single letter or number rather than a series and the bin of area where the specific part was located at the station carried that single letter/number making the process quicker. Believe that is what we have with "B16" Tire-Size. That shows the worker the single code for the 6.95x14 tires listed by the tire size at the bottom of the page on line "H".
Other codes used in "B16" include D (735X14), E(185R14), F(F70X14) As a side note and not meaning to take the conversation off topic, on Cougars the coding is different and uses numbers instead on the copies I have.
The box "B17" Tire-Type was not always used for some reasons and on some sheets the provider or "Brand" is included on the sheets but not all
Would take more time to decode and cross reference tire type but would offer that the following codes are what I found scanning though some 67 buildsheets
A, D, 1, 2,
Boxes B17 and H41 may be interconnected. So there is another area to look into. Need to get back to work on other projects. Will see where the discussion leads us