changed sway bar bushing in rear of the car and still sways?

Answer 1

COuld just be the tires....alignment.

Answer 2

Changing the bushings will not do anything significant, you still have the same sway bar. You will need to go to a thicker sway bar. Also, putting a sway bar in front will help tremendously, but the same rule exists if you already have a front sway bar. Shortening the horizontal arm, or extending the attachment point out towards the wheels more will help the existing bar(s).