Rear 14 bolt:
1/2 ton and 3/4 ton are interchangeable except for ubolts (and plates) and most likely the driveline ujoint (napa 448 is a 1310/1350 conversion joint IIRC)
1 tons are the same except that the spring spacing is 2" too narrow, so you need to move perches.
Front:
All axles use the same spring spacing and 1310 ujoint. Ubolts and plates are the only difference.