68 is coming along nicely

Hmm, what do I have here? I’m totally green on these axles.

 

Look like you originally had the gm ho72 with the oem no spin. Potentially had a bearing failure and the gmc dana 60 rear was swapped in. Or you have paperwork from a different truck!

 

Ok, anything else needed to be changed when making that axle change, shock mounts, drive shaft length, brake line routing? All that looks original to me except the soft brake line down to the top of the axle, I figured it was different because of the flat bed they put on it. I will pull the covers and check to see what’s inside and verify ratios too.

 

I believe them to be a direct interchange.