Check out Modular Head Shop (MHS) for ported 3V heads and they'll match you up with some cams. MMR has 3V options too IIRC. But yes heads/cams.
Also post pics, your car sounds badass.
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 ****.