Yes It would look nice with the bulge GTS hood.
Unfortunately will not work. 67-69 Dart hoods are the same, 70-72 Dart, Demon hoods are the same. 70-72 Dart, Demon front fenders have the extensions on the front as to work with the 70-72 Hoods.
Have to find a way to graft the GTS Hood Bulges on to your 1970 Duster hood if you want to achieve those results. Although 70-72 Dart Demon hoods have ridges down the left and right sides that will interfere unless you move the GTS hood bulges inboard more. We are talking total custom work here.
As such in this photo of grafting the GTS hood Bulges onto a standard 67 Dart hood.
View attachment 1715339818
Example of what could be done to a standard 67 Dart Hood for those that want to customize things.
