Typical Fox4/SN95 chassis setup for handling:
-Tubular K w/coilovers
-Full chassis bracing
-If staying SRA get a Tq Arm/Panhard bar setup and tubular LCAs
-If swapping IRS get one of the good Delrin kits like FTBR
-Obiously a good set of shocks/struts
-Wheel/tire combo setup for handling
-If you have a bunch of money burning a hole in your pocket you can also convert the front end to SLA (short-long arm) but that's complete overkill for all but a dedicated track car.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.