Ok, I found what appear to be marks on the ends of my axles and want to confirm what I think I'm seeing.
1970, Dearborn, Oct 6th build date, 9" with 31 spline axles, 3.91 gear ratio.
Driver's side axle end ~ painted white with a pink line / slash? And a little white squiggle, like an initial / inspector mark?
Passenger side axle end ~ possibly a yellow blob and another initial squiggle? Or is that just a different shade of rust?