11th gen Civic Si (Carbon spoiler

[xxBodom]

I was looking at this carbon fiber spoiler as a replacement for my OEM spoiler. Spoiler Car door Bumper Carbon fibers Performance car I wanted to see if anyone else here has any experience with either plugging their trunk holes and 3m taping the new spoiler on (while being flush and not lifting the spoiler?) or managed to bolt in the new spoiler that doesn't come ready for that (preferred method)

I'm in California so there's occasionally rain and would like to keep water from getting in.

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[RR.fe1]

Most of the aftermarket carbon fiber are just stick on with 2m tape, you would still need to fill the holes in