I agree. The grille you cut up could have got you some decent money if you would have sold it.
As far as intakes, if you're looking for more power, there is no better intake than your factory SVT intake.
Same goes with the header, nothing really compares to the power output.. This is why all the non SVT owners want to swap to that header.
I see where you're coming from, want to swap stuff to make it nicer and more "you" but tbh majority of your engine is practically the best there is.
One question i have for you is, why a Cobra badge?
Looks like you're on the right path with a few things- Massive massacre bars and a CFM adjustable sts. I'm not trying to be rude, but you should take the advice of the people that chime in here.