<VV> Corvair long and short differential yolks

[Jerry Brown]

I've replaced a PG differential in a 62 Corvair, origin unknown, and the longer yolk shaft will not go all the way into the differential.  It seems to stop an inch or so short.  According to data all 60 - 64 Corvairs used the same short and long yolks. My question is. Was there a differential that used a short shaft on both sides?Jerry Brown 
 

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