I am going to buy 2 knuckles from billybobf...that leaves the other 2 knuckles that I have from an 83.  One is the SLIGHT surface one that I was talking about and the other is good to go.  10 for slight surface rust (and I will clean it up the best I can without soaking it in diesel or anything) and 20 for the one still on the axle (no surface rust).  Let me know if that sounds good man and I will also get a pic of the slight surface rust knuckle...figured you might want to save a little cash.  Talk to billybobf about the delivery part though.