What's a good exhaust and intake to put In my car?

I have a 2003 nissan Altima 2.5 the engine is always hot which is normal and I want an intake that'll cool it down a bit and make my car perform a bit more also for the exhaust since mine is already falling off I need a new one but I don't want to get one that makes sounds like those ugly Hondas, my car is fixed up, grey tinted windows chrome rims nismo front lip and other stuff, I'm still working in this car ( it's a project car, no I'm not stupid It's not raceable since it's a 4 cylinder it's just for looks, help me add more things to make it look good.

Well… Go for intake from K&N, Injen, or… My personal favorite, WeaponR. Anything of the exhaust sort, well since you really aren't looking for that much performance I'd say just go to a muffler shop and shop for one to add to your vehicle. It'll provide minimal performance while giving your vehicle a better sound.