Front caliper interoperability

[Nachos82]

Question for you guys who are in the know. I have an 82 K10 that I want to get back to a road worthy point. Part of this effort will be refreshing the front brake system (rotors, calipers, pads, lines, etc.).

From what I recall, but it is slightly fuzzy data, the front and rear axles have been swapped out with 77 model ones. I did some brief checking on rockauto and it appears the part numbers are different between a 77 and an 82.

The question for everyone is if this is actually correct, or is the actual year not important for the part? It will be roughly a week or so until I can get the truck into a garage to start taking things apart and physically look at what I have.