I run the Konig runlites. I can't comment on any other options.
They fit over PP brakes and are lighter than Austin's by a wide margin and a little lighter than the 18' Pretorias. I've had no issues with them in 2 Sessions with 3 to 4 drivers, 12 events a year.
That being said, rear sway bar and proper alignment are what transform the car.
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