I live in cali too and it sux because california is the most strict on motor swaps. It really depends on what kind of car you have. As long as you get an engine that is your model year and older. Also, it woud really help if you get receipts for the motor, it would make your world alot easier. Then if you do get the "sticker" from the ref, you don't have to be worried about cops pulling you over. peace!