Now I’m really confused. 😕 I just found another folder/picture on my back up drive that shows the 1954 driveshaft with 4 splines on top, 11 bottom. So maybe the 4 splines was the change for ’54 and then they went longer in 1955 making ’54 unique. So my assumption that the one I have now is a ’54 might be wrong. I’ll get to the bottom of it sooner or later.
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