Mate.. there is a thread about this not that long ago. I had the same problem and was told all these solutions, none worked... SO just because I was bored I greased the (sorry don't know what its called) but it's located in the engine bay at the bottom of the shock towers. Make sure you do BOTH sides front AND back. To my surprise, stopped my squeak instantaneously! You can make it bounce, go over speedhumps and not a peep out of the front end.
Fixed another 3 Falcons this way! Yours might be a different problem but worth a try!