All who are interested.. Anco has a kit part number 48-17 that will convert you wiper arms from ones that use two small screws to hold the blade assy with what is called a J-Hook that will allow you to mount any J-hook blade, and there are many, to the existing wiper arm. Any parts house should be able to order for you. I paid, this is the good part, $6.96 for two J-hook conversions and then went to the wiper area and picked out the baldes I preffered. Parts were at NAPA.
Pull the balde through the opening in the blade and snap the attached cover back in place. No ladder needed.
I hope this helps