Hey there Uncle Billy, When it came time for me to tackle the CV joint on mine, after a day of ending up looking like a monkey trying to do rude things to a football, I ended up at a driveline shop. Theres a plastic spacer inside thats a real bear even for a guy with the proper set-up. Unless you're into frustration you might find its money well spent. The reason for a driveline shop as opposed to the dealer is that they're set up and specialize and won't try to charge you dealer prices.
Hope this helps, Jones
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Jones
'84 Ramcharger w/CTD, non-gated 12, torqflite, NP205, Dana 60 and 70 w/ 3. 07s. Looks more or less stock, definately doesn't sound stock.