I live in ca where the smog laws suck. I have a 2006 kc with 31,000 miles. I currently have no issues with my exhaust manifolds leaking, but always wonder if they will eventually. I want to eventually run jba shorty headers and magnaflow cats, but how can i do so without having to switch everything out every year at smog time? im looking for a 1 time upgrade that will pass smog without having to switch out parts before inspection every year..any advice?