Hey Dan,
Here is the door I have.
View attachment 1716390334View attachment 1716390336
Is it the same shape as yours?
Mine is from a 67 Barracuda / dart. Should be the same for many years.
As for the housing...
It's a fiberglass like material you might be able use some plastic and cover it with fiberglass,
But I bet if you post an ad for the entire piece you'd get one on no time.
The door I have if you want it $10.00 plus shipping.
Dana