Converting To Stock Ac---some Questions??

[MONGO1957]

I'm In The Process Of Converting My '70 C-10 From A Non-ac Truck To An Ac Truck. I've Decided To Go With The Stock Setup And Have Already Modified The Firewall To Accept The Stock Evaporator Core Box That Hangs On The Firewall(i Know, I Like To Do Things The Hard Way --- No Aftermarket Ac).i've Rounded Up From Various Sources Most Of The Ductwork, Both The Heater Core Box As Well As The Evaporator Core Box, Ect.,ect. I've Pretty Much Lined Everything Up...... Except For The Two Actuators And Doors For The Air Inlet And Outlet?? I Know That One Appears To Be On The Cowling And The Other Appears To Be Somehow Attached To The Passenger Side Air Vent. Has Anybody Done This Conversion Before? Does Anybody Have Any Pictures That Would Clarify. Any Info Would Be Helpful. I Must Say That This Forum Has Been So Helpful To Me In The Past. Thank You