I haven't heard of california package foxes even though I live here ! haha.. But I can only assume it was a number of option upgrades to make up for stricter emissions/possibly slightly lower stock power (in the end it doesn't limit the car in any way)
I could be way off base!
Best of luck with the car - and welcome to the site!
__________________ 2012 IS F Blue IS F Sport 2006 Mustang V6 wannabe
ill have to look at the pdf when I get home. actually the california edition has saleen racecraft suspension minus gload strut tower and subframs which have been put on. it also has a hurst shifter. the engine is stock with the precats but all this will change. we are waiting on the gt40 cylinder heads and ill be adding new exhaust from the headers back and probably a mild cam.