1941 Shocks, Early/Late?

[Fred A]

In the Pre-War "Chassis Book" shocks seem to be listed as 40-1 and 41 for those years, with 01A then 11A respectively. Being *** deep in 01A parts, would be pleased to use those, if needed on a 11A. As soon as the ground dries out, I may crawl under 11A to ID the shocks and also read the rear gear stamping for good measure. Thanks: Fred A

PS: As a big user of original Houdailles, the shocks for a '40 are in good supply at local swap meets, and I'm getting better at finding promising cores. If only the links were as easy.
FA

 

[Kube]

Fred,
It seems to me the center-to-center distance on a '41 shock is a bit wider than a '40.
Also, '40 shocks have smaller diameter bodies than '41 shocks; about 3/8" smaller diameter.
I'm certain the arms ('41) are also different than '40.
I do not believe they ('40) are a direct replacement for '41.
Links come up for sale fairly often. I'd check with Michael Driskell if I were in need.
1941 was a bit odd in that front links were 4 3/4" long while the rear links were 4" long.
Correct '40 shocks, especially rear shocks are quite rare.

 

[TJ]

Fred the different part numbers may be the fact the '40 shocks were also used on the '41 pickups. The '41 pickup used the '40 frame and running gear.

 

[Fred A]

As TJ pointed out, the '41 pickup is just a '40 with engine options, therefore just explains my making a mystery where there is an answer. lying on my back under the '41, the larger shocks were not noticed. Thought I really had something.
The declared rarity of the rear shocks for the 01A may trigger my hoarder gene (scientific proof exists). I found more fine rears after I put work into some lesser candidates, but they are all lefts. Thanks: Fred A