don't know if this helps. i recently swapped in 3/4 tons in my rig. 14 bolt ff in back and corporate 10 bolt in front. front axle looks identical. swapped locker in to front from 6 lug, new u joints, ball joints, bearings and seals. everything was identical except brake caliper backing plates. didn't find out until putting on calipers after everything else was done. the 1/2 ton plates are about 1/4" different and will not allow enough clearance for calipers and pads to fit around rotors. had to take hubs back off, bearings, spindles, rotors, and put 3/4 ton plates on then reassemble. that was the only difference. everything else is exactly the same. figured i would share this, hope it helps. also i got brand new 15x10 eatons and had my tires swapped over. had to grind down calipers and backing plates for them to work. went wheeling for first time last saturday since swap. huge difference with 4.10's vs 3.08's in stock axles. well worth the swap with just that.