I have been searching for the supplement package belonging to my 2017 GT 350 for two years now. The search goes on. Good luck with your pursuit! At least you know where your's is. The previous owner of my car won't even respond to me and I know that he purchased a 2018 GT 350 when he traded in mine with 1700 miles on it, cause he wanted a different color, that's according to the dealership. I got a great deal on my car, it's perfect, came Ford's Certified Prep Owned status, I should be satisfied with this great car alone. But I too feel the package belongs with the car!