I found it took a little finagling to get it to line up. I attached mine with sheet metal screws into the bumper cover. I pre-drilled holes in the lip and then match drilled a pilot into the bumper cover while pushing or pulling to the location I wanted. The only place I had a bit of a problem was right at the inner portion of the "fang". There wasn't quite enough material to get it exactly right and still install the existing fastener so it did sit an eighth of an inch or so recessed at those points. But it still looked fin.
That is until some idiot (me) smacked a curb this weekend. It's off now deciding whether I can repair it or not.
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CDV delete, clutch stop, BMW pedals, Strongstrut bar, CF rad & coil cover, M3 reps, roundel under hood, Intravee II, air bag sticker delete, first aid storage, painted reflectors, headlight washer disable, Skyer CF front lip, Short shift kit, Leather Z arm rest, Stromung exhaust, RPI scoop, RTAB limiters, powerflex bushings, TC Kline DA coilovers, PB big brake kit, Skyer CF rear spoiler and diffuser, oil pressure and water temp guages.