Ahhhh, I got ya. But obviously if someone does the proper research it's not a challenge at all as they have shown with the article, just need to have mostly CARB approved parts. I am very early in the planning stages (Don't have a car yet), so I am figuring out exactly what parts I can use to pass smog. All I'm looking for is something with more power than stock not an all out racer, it won't even see a track, just a street car. Pretty much so far what I'm thinking is 97-earlier Explorer intake, AFR Renegade 165's, Crane 2030 cam, Crane Cobra 1.7 rr's, BBK 1 5/8" ceramic coated shorties, Magnaflow CA approved hi-flow catted 2 1/2"x-pipe, Flowmaster American Thunder Stainless 2 1/2" cat-back, Aeromotive Stealth 340lph in-tank fp, not sure what MAF, TB and Injectors to use at this point. But I have time, lol.