thanks again for all the advice, to clarify renntag, i thought i mentioned this in my original post "while i'm driving. if i push in the clutch, i don't hear it. put the clutch out, and step on the pedal, and noise returns".:

to comment on Barry's post, that is the situation, it only seems to happen after warming up the differential. I was unaware these could be re-lubed. is there some zerk fitting i didn't see?

Also what you mentioned, is that i could rebuild these, i was unaware of this as well, sure sounds like it could be way less expensive. would i then order "C/V joint" or something like that?

i sure appreciate all the help, and i hope my re-clarification helped.

Guy