I wouldn't call anything 'impossible' when it came to the way stuff was built on the line. Back in 1978 a friend at work told me about his '69 383 road runner that had a Dana 60. I tried to tell him that they didn't come with that rear with a 383. He just shrugged, said HIS did.
Ask Galen!
LOL
Some engines in 68 that should have been turquoise were actually shipped with hemi orange because they were out of paint.
Interesting. Any more info on this?