I have an original ac vent box I pulled from my 73 duster that has factory ac. It has no cracks, all vents open and close nicely. $30 plus ride. I'm located in Swansea, MA.
I have two white duster door interior panels. With arm rests. Door panels are not perfect, good for a driver/daily.
-door panels pair $25
-arm rests pair $15
parts are located in MA
Thanks FABO