1962 GMC dually front end swaps?

[GMC-V6]

I have 62 GMC it's a DRW truck, I wanted to know if the 73-87 swap can be done on the 60-62 trucks like it can on the 63-66 trucks? The 60-62 trucks have torsion bar vs 63-66 which have coil spring front ends.

I've got the torsion bar front end, I need to update my front end as my wheel bearings have went obsolete plus power steer and disc brakes aren't to bad of side effects.

I've also heard tell of being to swap spindles with a 67-72 era trucks? Any more information on this one??

Thanks for your time
Mike