Oh so the turboIII stinger is still in good shape then? Did it cave inward on the pipe with a dent along with it?
Since the air is traveling on the inside of the pipe its where it matters. Outside is just outside. But If there is a dent outside It definently means the inside has a dent.
The outside it will look worse and the inside it wont look as bad but its there. How much it effect performance. Not sure.