A 1998 C2500 Hub/Rotor has an outer bearing that will fit right on the old truck spindle. The spindle needs to be turned about 15 thou where the inner bearing sets. The only thing I don't know is if the bearing spacing will work out on the old truck spindle. I am going to check that out before I go looking for axles or spindles. If someone else wants to look at P30 axles great, but that is not the path I am looking into now.
Rick