Steeda Subframe connectors, Steeda or MM Lower control arms, leave the stock uppers alone and a good set of lowering springs/shocks/struts and MM caster camber plates. Also get a set of 4.10s in there asap.
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 ****.