^^^^^ This is one of the main reasons. IF you are really concerned about getting replacements get the Wbody store replacements that "Claim" they only use GM cores. I personally went with the Cardone Select axles that are brand new not remaned. They are the same axles that NAPA rebrands and sells for a lot more. I know of a local guy who has them on his car that runs in the 12s and they have not failed him yet on multiple track runs. The only car I heard that had trouble with them was JonBobs car on the other forum but he is putting down way more HP than most anyone would put to a stock axle.
I need to get some of those grease-able sway bar bushings. Where are those from again?