My "new" '74 Duster- or why I need a project like a hole in the head
Now, there are a few differences between the '74 Duster and '71 Demon parts. The quarter supports and tail light brackets are a the big one, the '73+ Duster's didn't have tail light brackets like the Demons did, but the did have supports for the quarter/trunk gutter. The Demon's had them too, but they were incorporated into the tail light bracket.
Burntorange70 did a GREAT write up of the differences here, so I'll reference his thread and borrow a couple of pictures...
Duster to Demon Tail Panel Swap
'73+ braces...
Demon tail light brackets and braces...
But this is where I'm going to part ways from burntorange's conversion. I've converted my car to have a fold down seat, and the trunk trim panel that covers the tail lights mounts to the later quarter supports. So, I'm keeping them, and deleting the brace from the tail light bracket.
Ta-daaa