The 60 should have a Bill of Materials number and a date code stamped into it on the front of the drivers side tube, and should look like this....
View attachment 334728
use this to decipher what you have... https://www.expert.dana.com/expertforms/deabill.aspx
if you can score some decent backing plates, fine, but alot of people don't run them because they end up getting bent up in the trails.
I would be checking those kingpins, they do wear out. The spindles, unless you see obvious damage, keep the ones you have. They don't normally need replacement.
The drums, just measure what you've got and look on Rockauto for parts...they have it all. Use the CK5 discount too!
Are these spring perches NORMAL? Driver side is a welded on platform and the passenger side is a solid perch that you can't see through.