The spoiler is easy to remove. Lots of posts with more detail probably. There are 4 screws that hold it on. They are outside the weather stripping, I didn't seal those, just plugged with 3/8" body plugs, my dealer got them for rust proofing hole plugs. The wiring harness is on the passenger side and is 3/4". I sealed this as the plug didn't fit as well and it leads into the trunk compartment. All the holes are oval. I'm waiting to have these filled permanently, but just moved and the 800 dollar quote is a little steep at the moment. It is so much nicer without the spoiler. You can see traffic behind you and no glare from that ugly thing.
2004 QuickSilver GTO