U-Joint Identification Model AA?

I have a good U-Joint that I was told fit Model A up to 1938 Fords. I am working to rebuild the transmission and just wanted to verify it would fit. The side that goes to the main shaft is to big and turns on the shaft. The side that goes to the driveshaft looks the same, although I did not try it on a drive shaft spline. Does anyone have any idea what it may fit? It looks like a later Model A joint. When I laid a known Model A joint beside it I could see the difference in size.
I wound up rebuilding another u-joint with NORS parts I had on hand.
I have attached pictures with measurements.
Thanks
 

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That looks like u-joint A-7090-C used for installing a 4-speed trans in a Model A or and early 3-speed equipped AA.
 
Neil Wilson describes the different "spline" options for 6 spline universals at a page devoted to the "connector shaft" (also describes the Dual High) There is a small difference in size between the Model A rear axle drive shaft and the Model A transmission output drive shaft.

https://aafords.com/aa-chassis/aa-4802-coupling-shaft/coupling-shaft-3-speed-aa/

The later "heavy duty AA" with the Bevel Gear Rear had "10 Spline" universals which to connect a 3 speed transmission or Warford Transmission need a "mix & match" universal. 6 spline on one side, 10 spline on the other. Covered for four speed installation in a Model A at Vince Falter's page https://www.fordgarage.com/pages/aafourspeedachassis.htm

At one point I was going to install a Warford in a 30-31 AA chassis. To do this I required the "Mix & Match Universal" which Tam's (Joe Tamborello) helped me score.

Joe K
 
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