I honestly would not bother drilling the trunk. I cut the studs off of the factory one and sticky taped it to the trunk. Survived nearly 100MPH on the race track and about 10 hours worth of track time. The factory one is super heavy compared to the CF one I imagine.
Also, most of the OEM spoilers now have deteriorated, and have all sorts of rust on the bottom of them. Most of them don't fit right at all anyways.
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