The initial impressions after the install of the kit were pretty amazing. There was about a 90% reduction in squeaks and noises that came from the interior. The ride quality was smoother and the suspension seemed much less harsh. There was still some standard issue cowl shake, but overall, we were very pleased. As we put some miles on the install, a few of the squeaks reemerged, though still less than before. We think that everything was just settling in and that retightening the nuts and bolts will improve everything permanently. The ride quality has remained very nice and we wholeheartedly recommend this as a must do modification for any Miata owner. We will do even more to improve chassis rigidity as well as other performance modifications in the future, so stay tuned!