Oswald - Perhaps it would help everyone better understand what bushings you are taking about by posting some pictures of the bushings and where they came from on your truck? You described measuring the bore of the "shackle", but in my minds eye the bushings are in the spring "eye" that the shackle attaches to. All the references I have found so far indicate the bushings are they same size, part number, etc.
Pictures will help clear up any misunderstandings about what the actual parts are that you are describing please and thanks.
