Finally got the 8.2" rear axle in place. I kept my brakes and wheel sensor harness. Chunky 3rd got rebuilt last weekend with 4.56 gears.
Fun fact, the axle shafts are identical except for the bore diameter where the rotors seat on the hub flange. They made a lip on the flange just about 1-2mm larger, so the rotors are specific to model years on this axle. The wheel bore is still the same, just not the rotor bore. I didn't want to replace the rotors, so I just reused my axles. Also, I have recently rebuilt both of my axles, so the maintenance history is known on them. On the new axle, the junkyard couldn't tell me how many miles were on it, and from disassembly, looks like they have never seen a bearing replacement. The other thing is the swaybar is different. Larger mounts on the axle tube and slightly different location of the mounting plates. Running willy-nilly at the moment, but new swaybar is not cost prohibitive.
Here's what's identical on the 8.2" axle to 8" counterpart:
linkage brackets
shock mounts
axle shaft length/spline, mount flange/studs
dust shield
e-brake parts
calipers
hard brake lines
soft brake lines up to crossmember
wheel sensors & harness
wiring harness to e-locker actuator & lock position sensor
lock position sensor itself
The e-locker actuator motor looks identical except for the bored out holes where it mounts to the housing - from M8 to M10 size studs in the housing.