[Shiwnath]

Well then start with simple bolt-ons and work your way up.. If you haven't already, purchase a haynes manual or equivalent. There's much to learn in those books and it may boost your confidence on what you can and can not do.

Edit:

For headers, you have 3 options. Pacesetter headers, Milzy Motorsports headers and WOT-Tech headers which are unfortunately not available for purchase at the moment.

For exhaust you can get a bolt-on borla system made for the pontiac grand am which fits our cars just fine since it's on the same platform. You can also go custom. Popular choices on here are flowmaster and magnaflow.

If you want a cold air intake, buy a 3 piece set with a K&N filter off of ebay.