I have the K-MAC bushings, but I can comment about handling with extreme negative camber. Even though I certainly am not pushing the car to the limits, I think the car was more stable and kind of glued to the road with the –2.9 camber. It is still awesome with the –1.1 camber and the stiffer springs and shocks, but I think it was even better for handling with that crazy negative camber. It was not a scientific evaluation, just my impression.