Rear Sway Bar?

Yes I know but I've had this experience with a lot of different vehicles. I also owed a 68 formula s car and it handled very well with all the stock parts. A lot of different things come into play with this. I was only making a remark.

There low speed street type handling (like autocross) and higher speed track stuff.

In the lower speed stuff getting the car to turn (under steer) can be more advantageous and easier to manage.