The squeeks are probably the swaybar endlinks. I know that's what caused the squeeks over speedbumps on my car. I replaced them with some polyurethane ones from autozone.
1997 Formula: Borla, Moroso CAI, 1LE Elbow, Airfoil, Aluminum DS, SLP STB, BMR SFC, Spohn LCA, 1LE Swaybar, Bilstein HD, WS6 Springs, Hotchkis PHB, LT4 KM, WS6 Wheels.
"A musclecar, by definition, is a powerful and sporty vehicle that must be able to spin its tires at will. The Firebird Trans Am is capable of laying down twin black streaks of rubber several hundred feet long. We wanted to be sure it could, so we did it a half dozen times in the name of automotive science." -Motor Trend