[Ken/Alabama]

Originally Posted by 38 coupe

There are variations in the Lincoln Zephyr Columbias, just like there are in the Ford units.
The 1936 units are the same, Ford and Zephyr.
The 1937 units are similar, with a larger spring shackle opening in the Zephyr.
The 1938, 1939, and 1940 Zephyr units have a hypoid center, larger spring shackle opening, and the A-6 is not drilled and tapped for an oil fill plug.
The 1941 Zephyr units have a hypoid center, larger spring shackle opening, the A-6 is not drilled and tapped for an oil fill plug, and the axle housing is a bit wider.
The 1941 Zephyr could be purchased new with the R10 Borg-Warner overdrive, the Columbia overdrive axle, or both!

All that is true but he’s asking about the “guts” and the answer is yes