first off your title c20 = 2wd 3/4 ton . k20 is what you have = 4wd 3/4 ton .
then 3/4 ton did not get a dana 60 front factory .
if it has ball 4 u-bolts on a square body gm 4x4 front its not a dana 60 . they use 3 u-bolts and 2 bolts in the pass side diff to make up for the 4th .
next its got ball joints = 1 big nut on each . dana 60 used king pins = 4 bolts or studs and nuts on each point .
that is a dana 44 front as the cover is shaped like a dana axle would be + ball joints + 4 u-bolts + hubs that do not fill the center hole of the rim 100% all adds up to a 3/4 ton front and dana 44 .
hope this info helped you and others later on .
