The OEM 350r wing has bolts and needs holes - because it's functional. Did you buy OEM or knockoff? The 350r wing moves a bunch of air and needs to be bolted for safety - which is why the Ford OEM one comes with bolts. The 350/500 "swing" also comes with bolts(I have one). I know that both of these are reproduced by a number of folks, and would bet a dollar that at least a few of them do almost nothing, even if they look cool or are CF. Safety issues get recalled and a spoiler or wing flying off is a safety issue(Which is why Ford bolts). A 1/4" piece of plastic at the right angle(wrong angle) will have little to no drag and could easily be taped on without worries. The same piece shaped a bit different, with a slightly different angle of attack would change up everything and would not look that much different then the one that doesn't do basically anything. Side note you can stand and jump on my splitter without it moving. The fake one that come on most of our cars do nothing, and if they did you would be able to stand on it because it would need to be attached very well so it wouldn't get ripped off at speeds. Checking out AJ Hartman Aero videos was a real eye opener for me. https://ajhartmanaero.com/
Be glad your trunk has no holes. It cost me $200 to have to have my 19 PP1 center trunk holes welded over so I could install a Anderson CF Super Snake Spoiler. Good Luck
I know you dont want to drill into the trunk, however its not difficult at all. If I can do it, anyone can.
