1959 Chevy Truck Windshield Wiper Help

[AZ59apacheguy]

Hi. I'm wanting to install a windshield wiper assy in my '59. My truck had the electric motor assy installed but no wiper transmission arms were attached to it; there was also NO electric wiper switch. My first question is: Is there a suitable new style replacement switch that will work with this assembly?

Second question ( see photos ): I was able to find wiper transmission arms, is there supposed to be some sort of bushing where the transmission arm mounts to the wiper motor? There seems to be a lot of space and slop between transmission arm and motor assy ( see pics )