They are supposed to be removed during the PDI when the car was new like mentioned above. They were there to keep the front of the Z's from bottoming out on the transport trucks when the shipped them in. When I got my Z in Feb. I found that mine too had the 2 inners still installed. There are 4 total from the factory 2 inner, 2 outer. Usually the 2 outers are the only ones that got removed. Take your car back to the dealer it was purchased at and complain that it ruined your springs and you want new ones at no charge of course :)