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Hi, I am a professional certified mechanic, with an engineering background, and 35+ years experience. I will do my best to assist you. Also keep in mind I don't know if you are a pro or a novice, so feel free to add any additional info at any time.
Mid year 1968 the front spindles were switched to a larger diameter spindle, so odds are you have parts for the earlier spindles, and you have the late model spindle that is larger. If you bought a kit to install the disc brakes I would get with the kit manufacturer. Other wise I would try Jbugs, MOFOCO, or "The Smaba" for the parts. Go over all of this and if you have any more questions at all, I am here to help. Good luck with it, have a great day, and Thanks for using Just Answer.
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