I think by roof spoiler he means the sunroof/spoiler.. you know the kind that when you roll em back it goes on top ot the roof to make a mini spoiler, like on neons...

Or maybe he is goin to tint some of that plexiglass that he can mold so easily and put it on top of the rear glass..

2002 Focus ZX3, MTX-75: A good amount of mods 2003 SVT Focus ZX5, Getrag-6: FS Stressbar Best mod ever to my tour: A Beautiful passenger seat filler, that is my girl!!