73 Duster - I didn't take it apart....body assembly questions

And again, if you haven't already, download the factory service manual. Mymopar also has the '73 parts catalog available for free, even the accessories book. The picture of the headlight assembly from above is from the parts book.

Factory service manuals- there's a '73 Dodge manual available that will be basically the same as everything for a '73 Duster
-MyMopar - Mopar Forums & Information - Service Manuals

Parts and accessories books
-MyMopar - Mopar Forums & Information - Parts & Accessories Books

I mean, if that little picture of a diagram in a book helped, why not get the PDF so you can zoom in and actually see every individual part?

Screen Shot 2019-11-17 at 10.16.58 AM.png

Or look at the exploded view of the whole door? This is the biggest I can attach here, but you can blow it up full screen if you want if you download the parts catalog.
Screen Shot 2019-11-17 at 10.21.29 AM.png

Or download the '74 parts catalog so you can compare a '73 door to a '74 for hardware, regulators, etc? (and you can see here that the images are scaleable, this is from the same page as the full door picture above)

'74
Screen Shot 2019-11-17 at 10.28.11 AM.png
'73
Screen Shot 2019-11-17 at 10.27.40 AM.png