Upgraded Bushings
Mazda Competition sells some OEM replacements that are "40% firmer". I think they are a nice improvement. If it's a track only vehicle you might be better off getting aftermarket bushings like Jim Lab's which are very hard.
Replace the 6 rear pillowball bushings (factory Mazda @$50 each)... that should get the car back to normal. Beyond that the 18 delrin bushings that JimLab made (they aren't in stock... but people sell them all the time) go for $550-700. They are very firm... but the feedback from your car is great.
I daily drive my car with them... firm ride... but not overbearing as long as you don't commute thru construction zones.
I daily drive my car with them... firm ride... but not overbearing as long as you don't commute thru construction zones.



