I'm guessing the k1 kit has the extra front air vents? The first time I spotted one of these was at M-sport quite a bit of time ago now... 2006? Looked mean in the rear view!
Yeah K1 kit hase the vents in the front and in the rear. A lad at work has an FR TDI 170 but with the K1 kit, only difference is he had twin exhausts like a mk2 focus ST