I'll let some others "chime " in with more details, but your looking at: if you buy the Tuner yourself, cost of Tuner. If your ordering/letting a shop do it, cost of Tuner$ and charge for Installing$ Tuner and possibly charge for "Dyno" run, those should be less than $500, usually need two.
07 GT. SCT: CUSTOM TUNE by "MUSTANG SPECIALTIES". LMR: GEN2 2010 STYLE HEADLIGHTS, RAXIOM: 2010 SMOKED COYOTE TAIL LIGHTS, WHEELS: STAGGERED WHL 22X8.5F-22X10R.