Thanks!Cams wont change anything that could cause you to fail.
Headers usually require a tune change to compensate for the O2 sensors being moved further downstream; assuming you keep some kind of cat converters and rear sensors, it'll pass.
The one thing that could cause you problems is the tune itself! Be sure to let them know that you need it to pass obdii emissions inspection, and they'll leave things on so you can; otherwise they'll turn off the rear O2 sensors and you'll end up with 3 not readys.
With a tune, you might end up with 1 not ready, and as you've stated, that will pass (same 'rules' here, I can have 1 not ready, and I always have 1 that is not ready and still pass).
I have made numerous posts here and on other forums about passing emissions inspection; you can search for them by my user name, if that helps.
The mods I have planned as soon as I can get my grubby hands on the new SCT X4 is cams, possibly Ford Racing heads, short tube headers, high flow cats, CAI, throttle body, and maybe a new plenum.
I toyed with the idea of forced induction since I can get just about anything I want that is 49 or 50 state approved, but it seems like a huge pain in the ass when I don't really want more than 500 rwhp to be honest.
Now, if I was going to go crazy like a few buddies of mine have, then yes, Kennebell would already be processing my order.