Factory Correct Restoration Details

[mygmctruck1]

I have been reading this and though I am not doing mine any where near factory correct , I have noticed some things that are not factory correct for my year truck.
One is the arm rest , mine actualy came with 67 arm rests , it’s a 68 truck ( GMC )
I also have a 69 mustang , I converted to electronic ignition and of course needed to find that infamise pink wire ? I could never find it , what I found was a red and green wire in it# place and it came that way from the factory.
I worked at Lansing mich Olds plant and I know before that line got shut down for parts shortage , they would use what they could . Shutting down a line meant money and that wasn’t going to happen. So you never know what kind of things they did to keep the line moving.