Ok here's a little visual aid for you guys that are sketched about fitment. The duckbill spoiler was mounted using only these sport spoiler holes. You can redrill FRP so easy it doesn't matter, and if you're replacing a sport spoiler
you should definitely use a strip of 3M double sided tape on the leading edge if you don't drill it more to fit your many many holes:
Thanks to simota1 for lending me the picture of his holes.