I had this problem on my Formula. But I didn't really have a handling problem. I had a front end clunking problem. I replaced:
- upper & lower ball joints
- inner & outer tie rod ends
- steering rack bushing
- shocks
- upper & lower control arm bushings
And I STILL had clunking. I FINALLY noticed that my end link bushings were shot. Don't know how I did all that work without noticing that. Luckily, my rears were shot, too, so I didn't have any bad oversteer problems. After I replaced the end link bushings, the clunking finally went away, and the handling improved a lot.