Intake is a waste of money, get a plenum instead. Throttle body does nothing for you if you don't upgrade the plenum. Get the Trick Flow 75mm Throttle body/Plenum combo from Summit Racing for $279.
4.10s are always a good idea on a 4.6L.
2000 Mustang GT Steeda #0048
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.