Quote: You probably already know, but the 1978 hubs aren't noted for being strong enough for large tires. These hubs held up reasonably well with stock size tires.
Seems like I heard of someone taking the hubs off a late 80's or early 90's CAD axle and using these newer hubs on the 1970's axles. This swap is susposed to eliminate the hub problems of the 1970's axles and the weaker center of the CAD axles. In other words, you are using the best parts of both axles.
Hopefully someone else will chime in and tell you more about this swap. I'm not real good on the 4x4 stuff.
Yes you can swap 80-93 knuckles out onto your full time axle. Even the 3/4 ton. I was going to on a drum brake front axle.
