Consistent rattling noises are usually caused by the sway bar bushes and link, which you have already replaced.
You have replaced almost the complete suspension system and not getting near the problem but I believe the sway bar bushes should solve the problem based on the symptom description.
If it fails to solve the problem, the next thing you should be looking at would be the steering rack ends and steering rack. Check the steering rack bushings and also rack free play adjustment.
Normally steering rack or its links would have the noise felt as vibrations through the steering wheel.
The steering bushes ( mounts ) might transmit its vibration through the floorboard.
Tuesday, January 5th, 2010 AT 6:33 AM