Ignition vs Headers or Superchip

Im looking to do one of these to my car which are all relatively around the same price. I dont know which one would give me the best overall added performance for my car although. Either MSD Ignition system, Performance Headers, or a Superchip. I have a 2000 v6 Stang. With Flowmaster catback dual exhaust and a K&N intake. Thanks for any help you can give me :o)

LT headers.

LT headers.

What the man said!

i say get a http://www.mustangtuning.com/sct-xcalibrator-2.html

Exhaust and gears are the best bang for the buck on a near stock car. Ignition is gonna give you next to nothing, Ford's ignition is hard to improve on at less than 7000 RPM....

yea ignition is really a waste of money