Crack on Dana 60 rear spindle on 1979 D200?

[79Adventurer]

Hi all,

I got my truck running good so now it's time to focus on getting the brakes sorted out. I decided to start with the rear and after tearing down the brakes on the driver side I noticed a gap or crack on the bottom of the spindle where it meets the axle tube. New to the floater axles so some input would be very much appreciated.

 

[CrankyONE]

Not a crack but where the two parts were mated. Put your finger on the parting line and tap the flange with a soft hammer. Does it move or vibrate?