Since you have the street advance coilovers, it usually would be that your springs are binding when you turn the wheel. This can happen if you're missing the plastic bearing in the top hat, or sometimes it just needs a bit of grease. Doing the ball joints and tie rod ends can definitely be helpful with correcting some of the steering geometry and bump steer. Even on stock I believe the tie rods don't sit completely straight though. Make sure you get a proper alignment once you do install those parts, they won't fix your clunking but they will improve the steering of the car.