Well, if you go here:
http://www.mopar.com/perf_srt_turbo.html it says right on the Mopar website, about the Stage 1 kit, "Not legal for sale or use on pollution controlled motor vehicles." Also, if you buy their little Stage 1 kit, if anything goes wrong with your car they can't refuse to fix it. They have to prove that it was the fault of the aftermarket parts before they can refuse to fix the problem.
Also, the package may not "technically" be smog legal in CA, but it will probably pass smog anyway. It probably just doesn't have a CARB certification. Although, that's a risk you'd have to take if you want the extra performance.