i am sorry, i am so computer illiterate, along with a few other things, it's pretty pitiful. it wasn't very high tech or anything. i just took the arm off and drilled the hole that is pressed in the end of the arm the right size for the 4-40 and also in the wiper itself. i just use a short socket head cap bolt to retain it together. it tightens up with a allen wrench and you don't even notice it. the wipers themselves were kinda wore out and would rock back and forth when they moved and was starting to scratch windshield. i like the way it turned out so well i did it to both my 63 and 64. it prob wouldn't be for the absolute restorer. good luck, hr
