Regarding the King Pins, I believe new king pin sets are still available for our cars. Any good general machine shop should be able to press them out and fit the new ones for you. You can remove the axel and take it to the with the replacement kin pins.
As for the front wheel bearings, I had no problems finding replacement bearings and races back in 2015. Back then I lived in Dothan, Alabama, a medium size town in the middle of a rather large rural area. As a result, there was about every specialty shop you could imagine for repairing trucks and farm equipment. At the time there were two shops that only handled bearings. I chuckle remembering when I went to one and brought in my original bearings and races. The fellow looked at the Timkin numbers and said, "no problem , we have plenty of these, they are the exact same ones used on many Chicken House fans."
As for the front wheel bearings, I had no problems finding replacement bearings and races back in 2015. Back then I lived in Dothan, Alabama, a medium size town in the middle of a rather large rural area. As a result, there was about every specialty shop you could imagine for repairing trucks and farm equipment. At the time there were two shops that only handled bearings. I chuckle remembering when I went to one and brought in my original bearings and races. The fellow looked at the Timkin numbers and said, "no problem , we have plenty of these, they are the exact same ones used on many Chicken House fans."