Hopefully one of three will help you. What is the sales order date on the fender Tag? Could be a late year change or someone has replaced it.
There is always two sides to that bulkhead as well! On the inside it may be 67 and mismatched!
Remember just how old these cars are! look at the whole picture for sure. I did not encounter these issues as the 69 drawing matched throughout for me and only bad mods through the years and age. I see this all the time and 4spdragtop is going through this, not of his making but his car got some new harness's at some point and were incorrect. Don't blame the manufacturer, it is the end user that usually screws up and orders the wrong piece.
I bit the bullet and replaced every one of the harnesses, What was not available M&H made for me, worth every Dime!