Mark,

It happens all the time - all sorts of products can not be shipped to CA.

Lawn mowers, wood stoves, car parts, etc.

A friend got a waste gate for his diesel truck from out of state. Not some after market or bigger part, just not a CA part and it ran better than before. Then he had to go to the smog station and they noticed it and he had to get a CA version to make the truck legal! So it went back to crummy power!