72 Duster power steering

Ordered from summit last week … double pulley on bottom and single on water pump .. that’s what I was told is needed for a power steering non AC Duster? It does look as if the crank pulley was three pullies, the outside one might align with PS pump? I requested the double pulley from summit on the crank because thats what I read on this forum sometime back?
. The pulleys have the numbers on them. Their what u need. Kim