Galen Govier's Code Book - is it worth getting?

Hi fella's, does anybody know if the following book from Year One is worth getting? Still trying to find out how many Non-Formula S 69 Barracuda fastback's, with 340's, were made?


Part Number: GGB3
"Production Options Code Book" for 1969-1971 models

Link:https://www.yearone.com/Product/DisplayProduct/24536

Thanks again for your help.

Patrick