2009 Cobalt LT Mod Questions

[Posezion]

Hello everyone, I'm new to this forums so I thought I'd start by saying hi! Anyway.

So, I have a 2009 Cobalt LT and to be honest I don't know much about engines (My dad is the car guy, and he's going to restore a '69 Datson Roadster with me so he'll teach me the fun stuff then) and I can get additional information for you guys, but, what I was wondering is:

What mods should I add? Yesterday I bought 17" Wheels (Upgrade from 15" Hubcaps ) and have added Black Racing Stripes (decals, paint would have been expensive) on a yellow cobalt. I plan to purchase a high velocity air filter (Or something like that) for about 120$ around that range to add about 5-10 HP (Or so I'm told) and I would also like to know about other either small mods or big stepups. The main reason I came here is - Turbocharging/supercharging my Cobalt LT - I want all the advise I can get from people who know what they're talking about. What I want to know what turbo? kit should I get, reccomendations, sources, etc. I've looked everywhere and found parts for 05-07 I believe but nothing for 09. I would like to find boost gague mounts, gagues, turbo kits that work for my car, etc. I can give more information towards my engine if requested (And if needed to find out more).

Either that, or should I stick to small upgrades such as that air filter and stuff, heh.

As for the other mods, can you guys start throwing links to simple little things; I want my Cobalt to be between meowing and rawring, as in, I want to turbo it and have it be reliable (For atleast a couple of years), also when I talk about between meowing and rawring, I wanna know if there's a not too vroomey exhaust upgrade but fucking better/sexier then the, what, 1 inch wide stock exhaust?

I truly don't know too much about cars and appreciate anyone taking their time to reply. This is my first car ever (That I own, payed for, etc) and is the first car that I am being able to mod.

My budget, for now, is between 2,000-6,000 dollars.

P.S. When I say I want sources and stuff, I don't know exactly what parts will fit perfectly, or is it kinda universal when it comes to the general car; especially the air filter, I plan to get that pretty soon.

THANKS!

P.P.S. Here's an old picture of my car after the stripes were put on