Two bars, ~ 15mm and ! 16mm, They run a bit bigger, with hardware to hook one up. The 15mm has a sleeve on the swaybar that allows the 15mm to work in the bushing, and the 16mm does not have a sleeve so it works in the same bushing.
They are designed to bolt through the trunk floor but I think they also fit the rear sway bar mounts that can be picked up from various vendors if you car does not have them.
Full package deal $150 - plus shipping.
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Cheers, and Happy Holidays
Stephen