from what i understand the Ecology yard on 27th is a good place to find ford truck parts.... my buddy Greg heads there every time he is in town. + they have a half price day i have 2 pieces of the head liner trim your looking for.
Good luck finding yards that have parts for old trucks here in the valley. There used to be a lot of them but when scrap prices got so high, they all went to the crusher. Most of the yards down on Broadway that had old truck parts have either closed or crushed all of their old stuff.
Desert Valley probably has what you are looking for but probably want way to much money for the parts.
I used to know where all of the old parts yard were but most of them are gone now. There are still some around but they are few and far between.