I'm taking my car in tomarrow to ford

. What should I suggest they fix. My rear supension just started making creeking noises and a thump sound when I corner hard or go over bumps. It sounds almost like something is in the trunk banging around, yet I have nothing in my trunk. Also there is a constant little squeak that I hear in the right rear whenever I go over bumps. Any suggestions.
1998.5 Brullen SVT