My understanding has been the satin-type wiper arms were due to a Federal requirement effective January 1st, 1966. I've seen inputs over the years from owners of presumably unrestored cars or various publications, etc., stating that some early production '66 Mustangs originally came with polished wiper arms. Has there been any reasonable evidence, such as documented original cars, period photos, etc., to support this (or completely disprove it)?
Thanks
Thanks