Need help swapping from 2 speed to 3 speed wiper motor

[Uhcoog1]

I've got a 73 duster with a 2 speed wiper motor. Looks like I don't have room for it with the hilborn and I need to swap to a 3 speed wiper motor. What all do I need to get? Does the 3 speed motor have to be A body specific? year specific? What about the switch? And the linkage? What linkage do I need?

Thanks!
Wade

 

[1972 dodge]

I converted from a 3 speed to a 2 speed on my 72 dart. No big changes. Still using the 3 speed switch. It does work backwards from the 3 speed.