I am not a body man, but would venture to say it can not be done. You would sand completely through before achieving the goal. Alternatively beating it down, and using body filler to smooth it over to get the desired profile on top, would result in a lot of work with a finish never to be like an original, with the underside still showing the metal massaging.
No inexpensive/easy solution, grafting the humps into existing hood, Is another option.
But best thing to do is complain, complain, complain, to AMD, so they can correct the issue.