Asking for Opinions
I would not have put one on a Dart,Demon,Scamp or Duster. I just think it takes from the straight flat body lines on the car which they are known for. The A-body Barracudas they come on have a recess in the sheet metal for the cap. It looks like volume control knob on that flat quarter panel.
Now I am an old guy that bought one of these cars in 1971. I hated the mustang looking Go wings on the 70 cars. But I like the Gull wing on the 71 cars. My Demon came with the Go wing I traded it to the guy with this Demon. He likes the Go wing. So I guess to each his own. If you like it who cares what I or anyone else has to say.
One thing I can tell you is people walk off with the factory caps from the 71 cars. They won't steal yours. And you can switch back when ever you want.