This is why my post said "some " .I understand completely - so much information we’ve all gathered over the years it’s very easy to get our wires crossed.
I can’t recall when Dana dropped the 16-spline axles in favor for the 30-spline - I thought it was 1969 but they could have phased the change in at different times for different applications?
I don't know which ones had which spline count, but I knew that the coarse ones exist. Just wanted to give a recommendation to research.
Thanks for adding info.
