I know I am very limited with parts cause I have an 02' Audi A4 3.0 Front wheel drive, but if an exhaust system says its for a quattro, will it not fit my car also since I have a front wheel drive?

If not, I need help finding an Exhaust System for my car. A cheap, but good one.

And how about Intakes...Is just better to drop a K&N filter into the stock intake, or put a new intake system with new piping and a cone filter?

Last but not least...I know finding a turbo is outta da question for my car unless I wanna spend mucho dinero... but how about headers? any headers for my car?

I'm pretty much trying to make my car sound pretty. Any other suggestions?

Sorry for the newbie questions.