Based on what we've seen, I think those renders are pretty darn close! Especially the one from Car and Driver! I am a big fan of Wild-Speeds renderings. I expect bigger intakes, but that's pretty much on par with what I am expecting looking at the S-63 AMG
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.