1964 Dart - Wiper Blades?

Not worth futzing with the original arms and their all-but-unfindable replacement 13" blades. New up-to-'64 arms with the bolt-on attachment have been N/A for years, and the springs in them go flabby and eventually useless for keeping the blade pressed firmly against the glass for a clear wipe.

My preferred fix: get two Anco № 41-03 universal replacement wiper arms. They're fully adjustable for correct length and blade angle, and are really well made with good, strong springs. They also come with nicely-designed adaptors to fit on the pre-1965 screw-down wiper shafts. I had worried they'd be ugly, but really, they look just fine and work well. There's also probably enough room to go to 14" or even 15" blades rather than the original 13s if you adjust the arm length and angle strategically.

(Then you remove and install them just like factory '65-up arms, by lifting the base up at its very end; the special tool makes removal easy, but you can use a rag and two screwdrivers if you're careful.)