Can not say for 100% but I believe theses are the OEM wiper arms and housings, I doubt my dad would have replaced the housing at any point in the last 53 years, just the refills. View attachment 1715501910
That is correct for 67. Parts book shows all 67 A-bodies got the 15" Anco pushbutton blades. OER is finally selling the refills. You can buy them from Classic when they reopen or other OER venders.