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How was the 5" added to the junior bodies behind the doors to get the 127" offerings. I've read articles where it was referred to as some new process of stretching or pulling the metal. Is that considered sectioning or did they actually so something with the dies or was it truly a new non stamping process.
It's the same outer roof panel from Junior to Senior - sedan-for-sedan and hardtop-for-hardtop, within a given year. Look at the P/Ns in the parts book for the rain gutters; the 56th Series Seniors differ only because of the wider/taller molding. Also, take a look at where the roof ands WRT to the rear wheel openings - Junior vs. Senior.
I'm not sure how they accomplished the stretch with the floor pan, as I've not fully explored and compared that area.
However, to make the Senior door, they took a Junior inner door panel, added a rear extension, below the belt, and then tool up for a new, longer outer panel (skin).
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