Dovelx,
First, just to confirm, what year is the car?
If indeed it's a 7th gen automatic, do yourself a favor and do not put any money into it (performance wise). This is not what you want to hear but you don't have to believe me, believe the numerous of disappointed owners. You're going to drop a few hundred maybe even a couple thousand on headers, intake, exhaust, maybe some head work and you're still only going to net just a few hp. You will hate yourself for spending all that money with no real results. You don't want to go forced induction, which in reality, will be more hp for the money. And by the time you're done with the k-swap, you will have drained your pockets and gone into debt (based on your knowledge and how resourceful you are).
Don't mess with the car, put it for sale and get something that you'll enjoy driving and that's worth upgrading. Thank you for your service and good luck with your decision.