IntensePower actually installed it for me. It was not too difficult, as it attaches with doublesided adhesive. Howver, the screws that came with it are laughable. I reccomend upgrading the screws to aluminum ones so that they actually hold the spoiler lip cover in place better (I can't remeber what they are called!). Other than that, it is an outstanding product.
I did get mine shot with matte clear coat to give it more a flat black look.