I manage a municipal fleet shop here in SoCal, and we do about 150 smogs a year or so to our city vehicles. The rules here are very restrictive, but as mentioned, you can make mods to your current ride so long as EVERYTHING you install is CARB certified, and you'll have to have the supporting documents/stickers, etc for those products. Also as mentioned, the EFI engine swap is a very viable option as well. Since the swap is considered an "upgrade", you can do is so long as you follow the "engine change guidelines" as dictated by the BAR. You can find additional detail HERE Generally speaking, you must: Use a 50 State engine, not a 49 state federal engine, your donor must be the same model year or newer as the car your converting, you cannot downgrade by mixing classes (IE heavy duty to a light duty), if computer controlled, it must have a "check Eng" light and a ALDL/Diagnostic link, all sensors and associated wiring must be utilized, blah, blah, blah. Ultimately, you'll have to go to the BAR for your initial smog, and if successful, you'll receive an updated emissions label that is affixed to the car. It is interesting to note however, I did an engine swap on my 2002 Dodge Intrepid a few years ago. I scrapped the crappy 2.7 and installed a 3.5 which is a completely different design. It is a legit swap, but I have never taken it to the BAR. I have smogged it twice so far and it amazes me that the shop's have not caught it since the displacement does not match the current emissions label. I'm kinda on a mission to see how long it will take for someone to notice. But because it looks completely stock, and the car was available with the 3.5, it has been easily overlooked. Yours on the other-hand will not "look stock", so unfortunately you'll have to follow the rules as I am with my '78 build that I am doing now. Consider the swap, it's only blood, sweat, and tears. And maybe some money too Cheers!