You should check out Race Louvers. They have actual functional hood Vents that provide both engine cooling and downforce (Wind Tunnel Tested) They don't have ones made for the s650 yet butthey said it was on their list.
I've noticed that the headlights are a bit different on the Dark Horse trim of the Mustang compared to the other trims like the GT and ecoboost. It seems like the U-shaped lights are dimmed/darker making the car overall look more aggressive and better looking to me. Do you guys think there's a...