id go with an exhaust it will give u slight performance but more importantly an improved sounding mustang

 

If I could go back and do my mods in order. It would be.

Suspension- That has been the best mod thus far, looks drives feels better. Lowering springs and dampers will make a world of difference.

Second-CAI and tune is the most bang for your buck of any mod available.

Exhaust- sounds better, barely made any gains but worth the money for sound and the exhaust tips are better looking also

Gears- most noticable difference under your foot for sure

Pulleys and delete plates

Then the list goes on... Cams longtubes FI

 

This is a great first mod:
http://www.uprproducts.com/mustang-b...sct-tuner.html

Made a HUGE difference on my car.

These make a great first mod as well:
http://www.uprproducts.com/mustang-e...prings-05.html

 

For an auto sure everyone says CAI and tuner but there is something to be said for a torque convertor. I have most every performance part u could want and the best has been my torque convertor. Amount of torque u fain is amazing. I pulled .8 seconds from my 1/4 mile times with just the installation of a torque convertor.

For the most part this is a forgotten mod that really is worth the money.