Ok, here's what i got, I need help

howdy ya'll. I have a 2003 Silverado standard cab with a 4.8L. Recently I have out quite a few bolt-ons on. Here we go; true dual flowmaster exhaust with 3" high flow cats, Edelbrock ceramic coated headers(smog-legal), hypertech powerprogrammer, AEM Brute Force cold air intake, Granatelli MAF( I should have just cut the screen out of the old one), and some fuzzy dice for the rear view mirror(extra 15hp!! with the dice, haha). Now here's the deal, I have read a lot of things about a cam swap, like a ls6 or a ls1. but, I live california, and we have that stupid smog deal. If i were to swap the cam, would it still be smog legal and has anyone actually done it yet. will my engine still last (my foot is made of very heavy led- i drag race a 66 chevelle at the track and know a lot about old cars and engines, but don't know too much about today's smog code). any help anyone can give me, i would greatly appreciate it, and anymore ideas about mod's besides a supercharger or turbo would be awesome. thanks a bunch.

Here's a link to a few suggestions I made to another member. Hope this helps some.
http://www.automotiveforums.com/vbulletin/showthread.php?t=193171