Need to know about some mods

[TeriyakiBroccoli]

you're talking about the cat?

Oh ok, well don't take it off, just get a higher flowing one, no need to dump pollutants into the air.

you can find high performance cats at any import shop/ online store. It might be a little harder to find a direct bolt on to your car (I'm not too sure about this), but you can always have a muffler shop bend you your own exhaust system and weld the flanges on there as well.

You can purchase CAI's for about 80-150 on ebay depending on the make, if you can even find one for your car model.

Header, Eh... that might be tricky finding one.