Not sure if they're legal or not around here, but living in a state that requires an annual safety inspection I use regular tie rod ends on my steering linkage to avoid any possible hassle. On older vehicles like these they are mostly just checking for non functioning, worn or out of spec parts, and that your lights, wipers, horn and e-brake all function.
Most likely the typical "technician"%) performing the inspection will just see a tire as a tire, a spring as a spring, a brake rotor as a brake rotor, a ball joint as a ball joint and a tie rod end as a tie rod end....but throw heim joints on the steering linkage and they might see it as scabbed on tractor parts!;D