I cracked mine as well...
But I cracked mine when I bottomed out pulling out of my brothers driveway. I wound up replacing it with a Brabus K8 front bumper cover, but now I regret it for several reasons. First and foremost, the bottom of the K8 cover sits a little bit higher than the stock AMG side sills. It's not really noticeable at first, but now that I've noticed it I can't see past it. I'd say that it's maybe an inch and a half higher. I'm pretty sure that the optional carbon fiber splitter for the K8 cover would even out the difference, but it's $1200, and to be honest I'm thinking that I'll eventually return it to stock. The other reget is the fact that I regret going the Brabus route. Brabus items are expensive, and truth be told I just can't afford the brabus 6.1 engine upgrade, and I don't feel as if I have a Brabus car without it. Lastly, the K8 cover's more expensive than the factory bumper cover. If I could do it over, and as I mentioned before I may, I'll go with the 06 AMG piece. I think it looks more aggressive than the 03-05 piece, and I'd like to stick with AMG from now on...
Anyway, it's something that you might want to consider...
Best regards,
Matt