I never clicked on the link. Knowing Pirate4x4, that is a joke with spare parts. But then again, Pirate4x4 is a joke of website within itself.
Lincoln Locked diffs are not that bad if done by a good welder. Again, my buddy has a Buggy on Dana 60's with a T-Bird SuperCoupe engine, that is bored over. He used to have the same drive train in a CJ-8 and ran the same H1 rims/tires. He never broke the weld.