cai, pulley, and a tune will probably net you 20rwhp/tq or more. VMPtuning does great work with V6's so consider them.
For your car I recommend gears with a tune as the gears help A TON (you have 2.73 gears by going to 4.10s or at least 3.73s you will shave off a half second more than all the bolt ons will lol). On top of that the tune will firm up the auto a good bit IF the tune is written right by someone that knows what they are doing so make SURE you research here for the best place to tune your v6. Just because a place knows how to tune one type of car does not mean they can others as well.
2003 Cobra Vert (Redfire) #3938 of 5082 @ 05/27/2003
472rwhp/493rwtq -Modification List
- Dyno Sheet
2012 Mustang 3.7L M6 (Kona Blue)
2011 Ford Edge Sport (Red Metallic)