The question is not can they be made- its always about how many, for how much.
I know people who can build you one at a time, for, no doubt, hundreds and hundreds of dollars each- tinsmiths, basically.
But to get them in quantity, perfect, straight and true, with accurate dimensions, is going to require tooling and r&d costs that are considerable.
Remember that when these were made new, there were literally hundreds of shops in the Ford supply chain, well over a million workers, and every step, from dies, to giant presses, to welding and machining, was cheap and close by.
And remember that they were making large quantities. I dont know which Ford this is off of, but my guess is minimum orders would be in the tens of thousands- which means die making costs would be amortized down to very little per part.
But most of those companies are long gone, those diemakers and pressmen long dead.
In the 70s, I worked in the loudspeaker business, and we got custom stampings, somewhat similar to the two ends of this axle, done all the time- it all came out of Chicagoland, and there was a network of diemakers, steel stamping shops, welders, platers, and machine shops that did this kind of stuff every day.
And virtually that entire industry dried up and blew away to China 40 years ago- custom stamped speaker baskets now would take a year, come from China, and have 10,000 part minimum orders.