FYI on wiper blade inserts for these old cars which are getting harder to source.......NAPA carries a "classic" replacement line. This line includes an assembly with the rubber insert already installed on an arm blade that sorta-kinda looks correct - from far away. Not going to pass any judging, but fine for a generic replacement if you need the whole assembly. I bought a set and just removed the insert and then re-installed the rubber insert on my original arm blades. They are only $10 each. Maybe other solutions out there - doing a quick Google search of the reproduction parts houses for 16" 72 Chevelle wiper blades yields results for a reproduction assembly from Ground Up for $17 each plus shipping which usually runs $25. This was quick, easy, relatively inexpensive and looks great.