Got replacement hub assemblies for the ones that were in my IRS -- bearings were shot on one & just starting to show a little movement in the other. They're Chevy S10 4x4 hubs -- originals were threaded for 1/2" coarse thread. Raybestos replacements are threaded for Metric M12 1.75 pitch. Try finding class 10.9 (metric grade 8 equiv) M12x1.75x90mm bolts on a weekend. Errrggghhh!
I know. That's exactly the way I felt when I learned they quit making 2 piece Mustang hub and rotor assemblies and they were all one piece.
JB