What are the differences between the various years on the superduties as far as the Dana 60 are concerned, e.g., brake size,
Axle width, etc?
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I assume you are talking about coil spring Dana 60s for Superduty trucks. The dually F350, F450 and F550 axles have differences, so I will exclude those as well.
All the Dana 60s from 05-16 are the same width (and I think the same up to 2022, but I am not 100%)
05-16 use the same steering components (tie rods and drag link) - there are some different steering gears.
05-16 use the same trac bar
05-16 use the same trac bar mount on the axle
There are differences depending on year for the frame mount/bracket for the trac bar. Most agree the 05-07 frame bracket is the best (easiest install) for conversions.
05-16 axle shafts are fully interchangeable (35 spline inner and outer). The later years, I think starting in 2011 they used a 1550 axle ujoint. You can install those (upgraded) axle shafts in any year.
05-16 all use the same upper and lower ball joints
There are differences in brake rotor and calipers and steering knuckles depending on year. I will need to do some more research and looking at my notes for more info, but to get you started,
13-21 F250 - F450 have the largest Rotors (14.3" inches) and in my opinion are the most desirable. If you want to upgrade the rotor/caliper of a pre 13 axle you will need all the parts from the knuckle out.
05-12 use the same knuckle
05-12 rotor size is 13.66" and I can't recall if the calipers are all the same.
The Unit bearings are interchangeable physically between all years 02-16, however there are different cables for the ABS, so that could cause issues for you.
There are differences in caliper brake hoses depending on the year.
Hopefully that is helpful.