From what I have seen the passenger goes first for sure. Mine just started to make some noise so pulled it right away. But I think if my CV and intermediate were cleaned up, good grease of some kind they could be reused.
Maybe one of those things that they need to be pulled out , cleaned, and lubed every 80,000/100,000 miles

That brings up a good question. What type of grease do you think should be put in there when we put it all back together? just good lubrication grease used for like zerks and such?