Took delivery last week on my car and it was ordered with the package that included the Gurney Flap and two other things that are not germane to the question. When I picked up the car, the Gurney Flap was not installed as my dealer told me it was for "Drag Purposes" and Ford has requested the dealer didn't install it. Anyhow, before I left, my sales person installed it for me. The simple question is when I got home, I realized there were screws in the packaging the Gurney Flap came in. My sales person used the screws that were already in rear spoiler prior to installing the flap. The thing seems secure and I am not a "track" guy, so the car will never go to a track and I am not concerned about it blowing off as I did 140 MPH, as that simply will never happen. Does anyone know if the screws on the existing spoiler are the same size as the ones included with the flap? I would much rather not have to get the special tool and chance slipping with it and scratching something. Any advice, or just let it go?