Oh man what a discrace to Saleen and Mustangs in General.

[blue00gt]

For a rear spoiler to be effective it needs to be big and up high so it is out of the disturbed air going over the surface of the car and it also needs to be properly designed as an airfoil. From there the downforce goes up as the square of speed. So unless it's big and ugly, it probably isn't doing much except spoiling lift in the back of the car at very high speeds to keep it from feeling light in the anus.
The sad thing about a lot of the FWD imports is that their ugly wings ARE quite functional, but the back end of a FWD is not where you really need the downforce...