I live in California, and could not find one to order locally, I ordered mine from a dealer in Wyoming (MSRP).
I specifically told them I needed California Emissions, No problem.
It HAS to be on the "Build Sheet" in two places.
"California Emission System"
and
"Non-California Order for California Registration"
I ordered January 31 got the build sheet February 2, It's still a clean unscheduled build... so far no build date and no VIN.
I believe the emissions are identical for 50 states, but the "California Compliant" vehicle will have the proper ID stickers under the hood for emissions inspections in California (Or the other 7 states that have the same emission standards as California).
...hope that answers your question.