Pretty much a good M112, a fuel system and a tune. I'm hoping to do a TT to mine this May with my bonus if funds allow. Make sure you get the intercooled kit. If you don't you will hate yourself later and its completely worth it.
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 ****.