That's cool, I was pretty happy with the improvement the bump steer kit made. You'll probably be surprised at the difference new tension rod bushings will make as well. I took my car to the dealer with 14k miles on it and told them it was squirrely at freeway speeds and pulled left. They said one of the tension links had a lot of play in it (meaning the bushing was torn, lol) so they put two new one's on and aligned it, big difference. Now, 14k later, I'm pretty sure the left one is tearing again, they'll be replaced with those famous red ones pretty soon.
I have a similar red bushing in my GTO, they do make a nice difference. I'm not a fan of replacing a poorly deisgned stock peice over and over (it's already had one set of tensions struts replaced when it was under warranty).
I didn't feel a huge difference with the steering bushings, perhaps a tiny bit better steering responce, and a eency-weency better on center feel.
On a side note, do you belong to Club LXoM? If not join there man, lots of nice local people.