1972 Duster Factory AC

Sorry more questions about the Duster project I am ready to buy. Did the 72 Duster have the push button vacuum switches or does it have the slider controls. Also from a AC box point of view what is different between these boxes? Is the slider switch type not a vacuum type? Questions are I am piecing together the parts I want on the Duster roller build from a yard full of A Body parts and I want to be sure I have the right list of parts I want when we shake hands.

Thanks