U joints questions

[Ackattack]

I searched and couldn't find my answer.

Is the stock u-joint for a 69 3/4 GMC 4 speed/dana 60 a 1350 u-joint? Pretty sure it is, just double checking?



Second question:
What u-joint was used in 73+ 12 bolt rear ends? I'm not sure if the rear end I have is out of a 2wd or 4wd or what exactly. All I know is that it is a 12 bolt and does not have the ear on the pumpkin for the panhard bar. I assume that it is a 73+ because the front suspension from the same vehicle was 73+ also. So I figure someone at some point swapped this in from the same donor vehicle. The u-joint appears to be a 1330 series or something very close...but the u-joint doesn't seat completly. It's been awhile since I looked at it....so I'm doing some preliminary research.