In the ordering process which option would be listed first, the A/C or the Air Grabber? Is there a chance that both the A/C and AG could be marked or ordered and then somehow at the assembly line it is caught (no Air Grabber with A/C) but the hood grilles were already installed?

Today with the computer "Build Your Own" if you change wheels for instance you get a message "You must delete xxxx and xxxxxx for this change, do you want to remove xxxx and xxxxxx?" but back then I could see how this may slip by until it gets to assembly or broadcast sheet?