1973 dart swinger hood options

As far as I know, Mitch is correct.
There are some other possibilities if you're willing to stray just a little farther from the options sheet.
Anything that fit on the 1969 Barracuda should be an easy swap to the '73-'76 Dart since they used essentially the same hood.

There's also the fiberglass route (which I'm currently working on!) for which there are a few different choices out there. So far, I'm happy with the quality of the "Six pack" style scoop on my '73 Dart hood but I'm just starting on the prep so I don't have any worthwhile pics to share.

Hood, Dart/Dart Sport/Dart Swinger, 1973-1976, Six Pack, bolt on | AAR Quality Fiberglass Reproductions