Just getting into my frame off resto. Planning on going through my axles, put in lockers, seals, bearings, etc. I am pretty sure the '84 had 30 spline birfs. question is, how strong are these compared to the chrome molly ones out there. Ultimate plan is to have a really nice looking BJ42, turbo'd 3B that can occationally go off road (hopefully without the risk of wrecking it).