As for the "SS" itself... I think they did a good job. Not a fan of Chevy's new grill styles, but maybe that will evolve to something I like better in the near future.
The rest of the car looks solid from the pics. Can't wait to pull up next to one.
Edit: One thing I noticed on the bumper is that they are accentuating the sensors with indentations; I think that is bad. I hate the look of the bumper sensors to begin with, they should hide them... not make them stand out.