I swapped the front of my 69 over to 5 lug no problems at all now I am going to do the rear.I was told to get axles out of a 71 up and they would work.They are about3/4" to long on each side are the backing plates the same disc versus drums what am I missing here?Does any one know if the axles are the same from a 74 Your help is mucho appreciated once again