Not sure what your background is, but as a non-mechanic myself I've found that it is virtually impossible to diagnose suspension stuff yourself (unless a shock is stuffed or a bush is so bad it is visibly deteriorated). The loads on suspension are very difficult to replicate when lying under the car in the driveway. A suspension place will look over it for free usually, especially if you pay for an alignment or balance. Just go somewhere where you won't get any, errrm, bull. A check over yourself will eliminate anything obvious. I had noise the other day and the exhaust place hadn't re-tightened my sway bar mounts after refitting the dump. Fixed in two minutes. A have a couple of creaks and knocks in my BA and have been told everything is fine but it is a Falcon. So prepare to get a louder exhaust or stereo if everything else is checked and ok!