COE Convert 3/4 ton rotors to 1-ton

The 1973-1987 Chevy truck ch***is question

Can I just swap out the 3/4 ton front rotors in favor of the 1-ton rotors?
Spindles and calipers same between the two?

The only visual different I can see between the rotors is that the 1-ton rotors have a built in spacer to work with the dually rims. Anyone know for sure?

Thanks

 

I have my own answer. The 3/4 ton spindles are slightly different. The bearings are the same, so the 1-ton rotors will fit the 3/4-ton spindles. But there is about a 3/8" misalignment between the caliper and the rotor. Also, the 3/4-ton calipers are different than the 1-ton calipers. I ended up needing the spindles, calipers, and rotor from a 1-ton. The ball joints and tie rod ends are the same, so no issues with that part of the swap.