^ i did not know that! Good info
I thought everyone knew that!
Alright if it's your daily driver, the list of things I would do is as follows:
If auto: J-Mod and 4.10 gears, 3.73 if you do a lot of highway. I would switch to an 8.8 rear end so you have a limited slip and a much stronger rear overall.
If manual: 3.73 or 4.10, still with an 8.8.
The cold air intake did nothing on the V6 other than look better. There's not much you can do on the V6 aside from switching to a split port setup (like the 99-04) which involves changing the heads and intakes but is good for about 40 horsepower, more if you do ported heads and such.
Don't waste your time with headers, the stock ones flow just fine, but I would get GT catback and have an exhaust shop make you a custom mid-pipe. If you get too loud on the V6 it starts to sound funny.
Bring your maintenance up to date. Depending on how many miles are on it, I would look into replacing the head gaskets. If you get much more than 150k they are on their way out, and that's about the only thing that tanks the V6.
You could also try to find an Eaton M90 supercharger setup from a Supercoupe if you wanted a significant increase in power on the single port setup