TRW made the originals. I worked for them back in the late 70's and actually made a hell of a lot of OEM tie-rods and ball joints for Holden, Ford and a few other manufacturers. The name they were sold under was "DuFor" (Durable Forging).

I remember the tolerances were pretty small..... under 1 thou.

We made so many engine and suspension bits back then..... It's all gone now and we get to buy Asian crap.

Sad.