Hello and thanks for using Just Answer.I will try my best to help you with your question.
I do not think your entire suspension needs to be replaced. First find out if the noise is coming from the back or the front. Then check the sway bar links. You have a link at each wheel, which will total 4. You have front and rear sway bars and a link at each end which connects them to the lower control arms.
I have a 1997 and a 1995 TBird, and I have changed the links twice since the cars were new.
But check the links and see if the rubber grommets are intake where they connect to the lower control arms.