[PGSigns]

If you go to the disc brake swap thread you will find the part on the tie rods. The taper is larger on the 73 to 87 spindles. That is why yous just sat in the holes. The boots ar also gone on yours. Looking through the pictures you also have a mix of ball joints and one of the uppers looks to be an early model and one a late model. These also has different size tapers. On one side the castle nut seems to be drawn way up and the cotter pin hole is out past the nut. If this was my truck I would rebuild the entire front end with all new and correct parts. It looks like it needs it badly.
Jimmy