You just have to replace the bulb,isn't an mayor deal !
There's no such of specific switch for the fog lights

In regards of the exhaust there's no such of full exhaust system,but many mufflers to choose from depending on what kind of set up you looking.

The stock muffler is just too way expensive,if not mistaken we talking 'bout $ 300.00 so is up to you if you wanna go that way.