73 Dart Sport Fold Down Seat Package Shelf

The package tray for the fold down seat cars was totally different than the standard seat package tray. You can see pictures of both in the “how to” thread I did when I converted my ‘74 Duster to a fold down seat

How To: Fold down seat conversion

I don’t know for certain, but I would guess that the fold down seat package tray was made that way to increase vertical clearance for the pass through area. I didn’t swap the package tray, and I can say it definitely limits the height of things that can fit in the pass through area between the trunk and the back seat. It still works, but you could fit much taller items with the factory fold down package tray.