4x4 axle swaps?

[old Chevy guy]

Thanks for the replys I have a 70 k10 and am not sure what to do with it.I have other trucks all HD and thought about beefing this one up a bit as I dont have a road worthy 4x4 .I have a diffrent project truck someone else gave up on and Im pretty sure the 4x4 frame is a 76 it has dana axles and lock out hubs. also I have a diffrent frame for parts for the same given up project that I believe is an 80 both are 3/4 ton the latter also has dana but not lockout hubs I will check the measurements again.