The Stovebolt Site Forums The Shop Area Driveline 1950 Chevy 3600 axle swap for 12 bolt truck rear

I believe it to be chevy:
id numbers on axle.
11" x 2" brakes
NF3896838 Axle cast #
TDA 0109 W Axle tube code # (indicates 3.73 1969 W shift 1)
Built K148 1--14-68

Rear could be closer to 1969, if anyone knows a difference btwn it and 1970

if these codes where shared between chevy and gmc, i guess that would be code to know. Again, i believe it to be Chevy