noise on front end.

I have a 2004 pt cruiser turbo and it has several things wrong with it, I have worked on cars in the past but I'm no pro just little jobs on my own car, well I have some questions on this cruiser. While driving it makes a LOUD knocking noise coming from the wheels which when it first started seemed like a wheel bearing on the passenger side because when it started it was just a roaring noise, well now its knocking bad and grinding like horrible, and it sounds like its coming from both sides. Could it be both wheel bearings or tie rods or cv joint or what I have no idea and I am low on money so I can't afford to pay someone to fix it.