I am switching in a new axle and noticed that the current setup is different from what I see in the factory build manual. It has a second spring above and the way in which the main/lower spring is attached to the axle looks quite different to what I see in the manual.

Oh, and this is on a '51 3100.

Was this some kind of home built 'upgrade', a Chevrolet option or ?????

Thanks,
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1951 3100 5-window
with a '55 235/floor mounted 3-speed
Some of the story in ODSS
Most of it in The Shops Area wink