Try bouncing the car to locate the squeek. I had a squeek in the front end of my fox body. It turned out to be a dry ball joint. I greased the "sealed" ball joint using a grease gun with a needle tip and the squeek went away.
While locating this squeak & dealing w/ it (lubrication) will solve that problem other squeaks are bound to show up and probably soon. I suggest you have the entire chasis lubed at the dealer.
These cars are notorious for squeaky parking brake lines. It sounds alot like a cricket chirping when you go over bumps. You can fix this by greasing the line where it goes through the bracket on the rear end.
hmm? I'm experiencing a squeek at the passenger rear wheel right now. No noise over bumps or anything. It will make squeek noises when I take off only and when I decelerate suddenly (braking will not produce the noise. Only when I accelerate real fast and decelerate in short amount of time). I tighten the LCA bolt and everything. Maybe it could be the sway bar?
seriously it could be one of a thousand things. it's just one of those things where you will have to take a day & just track it down. i had a bad squeek in my last stang, it turned out to be the brake line bracket that holds the brake line when it comes out of the body right behind the drivers side door