I wouldn't think that the pillow balls would squeak when you hit a bump
@Scornio especially since they are new and you did put a little lube on them. They are just like a ball joint. I had some spring bind noises from my front coils but that was from a REALLY tight pillow ball. I had it replaced to correct the noise. It was only making noise when I turned the steering wheel at low speeds.
You should check the end links that tie the sway bar into the front suspension and make sure they are tight and also make sure all of the bolts are tight on the front suspension.
Let us know what you find.