Hey Jan , are you saying that because you have a seized king pin that you want to replace the entire stub axles , old style brake drums & shock absorbers

If the king pin is worn then you will need to replace it but if it is stiff then I would check out the grease nipple first then replace if blocked then fill a good grease gun with oil , preferably with the car jacked up , pump the oil in and waggle steering. Could work out a lot cheaper [-/