You might be better off just getting the factory replacement Moog ones. They are TPR which doesn't cold flow like poly bushings do, and its still a hard material so it won't deflect.
You may not experience the squeaking that you'd get from poly either. I say may, because some people have had squeaking from day 1. I didn't have anysqueaking till just recently when I put on TPR endlinks. When I had just TPR swaybar bushings, it was nice and quiet.