Califonia Smog???
But other then that, the meer mortal does not posses enough mojo to make this happen.
I know if one does a motor swap, one can go to referee and get it leagal. I was just wondering if a single turbo could be OKed by a referee also.
As for engine swaps, your engine must the same year or newer, and retain any and all smog equipment if so equipped.
But there are always places to go to get around the visual and only go through the sniffer test. I did that for my Subaru WRX, and paid about $250 to do so.

