Part #: WIP 61633
napa classic blade part number
fairly sure these are correct for our 68-72
take your blade with you for a sample
https://www.google.com/search?q=WIP...UIFCgD&biw=1067&bih=690#imgrc=z6SdY7AJ7ekOJM:
I sent a few sets to my buddy in australia ,,, they fit perfect ..
the issues I see on my 68 69's is.....
the spring on the under side that holds tension against the windshield rusts ... when they rust the gap in the spring
goes away and the pulling tension is gone ....
also when they get week ,,, the drivers side will rub on your hood chrome trim .... and the wiper arm will show a black mark right on the elbow ....
also the flat arm drivers side lock clip should be examined very closely... slide the clip back gently ,,,,
sometimes you need to tap lightly with a screwdriver on the lip of the clip and slide it back....
slide it back and check the "PIN" slot that the clip rides in ,.,,, some time with use I have seen them cut right
thru the groove the clip sits in and the wiper arm goes BONKERS and screws up alot a stuff..
windshields.. trim ... wiper arm .... and you cant see because u need the wipers...
please watch a you tube video if you never pulled a wiper arm off a GM like this ... theres a bit of a trick
to keep from scratchin things up put a rag under your pry tool ...
Scott