+1 on the swaybar endlinks. Though that normally is just a rattle at low speeds.
Does the car pull to one side when braking? If so, that is the LCA. Did you check or replace the LCA's?
I have never had any luck checking for bad suspension parts, hard getting them to move around. I either just do a visual, or just replace it.
97 T-Bird LX 4.6 - 68k miles
94 Supra TT Auto - street/strip car
04 Crown Vic Police Interceptor - Brenda's car
95 T-Bird LX 4.6 - fully optioned, owned 15 years
96 Cougar XR-7 4.6- Brenda's car, owned 11 years
88 T-Bird 3.8 - first T-Bird, owned 5 years