Honestly, as long as you got the taper correct, you could sub in a different rod AND ends to more available stuff.
And even if the taper was different, the steering arms can be reworked for a different one. I know some of the serious 4x4 guys like to convert their rod ends to the 1 ton GM style. Either by reaming or drilling straight and then inserting a sleeve with the correct taper.
Sounds like a cool truck and project.
