83 C10 axle identification

[dunyet]

I just picked up a 1985 c10 SWB stepside near Memphis. Trailered it home to Mobile last weekend. Got home and had a vibration above 50mph. traced it down to the axle, took the cover off and found the issue. the PO welded the pin thru the spool piece, I had to cut it to remove the C Clips. it was a 10bolt.

i went to the local pull a part yesterday and got a 12 bolt rearend out of a 1983 C10. I was wondering if any of you could identify it as being an 83 truck axle?

stamping on the housing is GM72 the passenger side axle tube has a stamping of KAA 234W72

thanks in advance