Don't bother with the replica ones they are terrible compared to the real ones. I bought an ABS plastic one, trial fitted it and sold it on. The genuine grilles don't fit, arches don't line up very well, and it's not as beefy as a genuine one. I couldn't help but think the car looked like a toy R32
If you can find a genuine one, go for it, but you defintely need the rest of the kit, or a least skirts and an anni rear or something.