Front Axle
610057-4 which translates to a 79-80 GM
Casting Mark 60F on the pumpkin
Tag on pumpkin side of the tube says 222-70
-35 spline
-35.1" Long Side Shaft
-12" Stub
-5.38 gears
-U-joint 1480 (4.188 x 1.375 dia caps)

Tuner guy
(314) 662-7957 big Steve