Lower Ball Joint bolts needed for K-H setup

I just always had them . I saw they were a special bolt and more than likely was that way for a reason. It may be OK but you would never sell it to me. Check how far it can move before tightening . Where would the correct position be? I'll make them if I have to.
Well, in your case it appears that you have access to a metal lathe, and have someone that has machine shop knowledge.
That's fine and dandy, but i will bet you a dollar to a rolling doughnut, that 99% of car enthusiasts don't.
So then, what are you going to do, if factory style bolts are unobtanium, hens teeth, dinosaur eggs, your going to use plain old, grade 8 bolts to put the system back together, and make the vehicle driveable again.
There's lots of things some automotive "engineer" thought of, but things work just as well without special items.
My background before the Air Force was in machine shop, tool shop, apprenticeship as a machinist, having gone to trade school, high school, back in the 1960's, so I'm not a rookie in that line of work also.

From 7 or 8 years ago.
Kelsey Hayes caliper bolts

Not to come across as a jerk, know it all, azz h@#e here, why don't you go into a sideline business and reproduce them, and try and sell them to make a profit for your time, materials, advertising, shipping, everything that it would take.
Just wouldn't be worth it.