Those look good - Hope they work out for you.

There is a 'new' Chinese axle being sold quite widely here now. Will be interesting to hear how they work out. Prices compare with GSP.
https://www.trakmotive.com/

What I learned the hard way, was that although Rock are a great resource for parts, when it comes to something like this, it would have been much better for me to buy from a local company where the warrantied parts could be easily returned. GSP offered free lifetime replacement, but shipping the failed ones back via Rock was almost as costly as buying replacements.

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5