that pop-up spoiler defeats the purpose of the original design. the OEM spoiler does not allow air to pass under the element (like a wing). it is designed to slow the airflow over the back of the car & reduce lift. that design in the first post won't accomplish this. a couple of years ago we talked about this; a guy installed it & complained that his car felt a little floaty on the freeway. the OEM spoiler is actually functional.
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