Just a heads up for anyone that ordered a wing from motormaxparts, an ebay seller listed on the first page, the links are dead now, because the ebay dealer is no longer showing as a registered user on ebay, not sure what's going on with it, but may want to request a refund, I tried contacting...
I've got a Dars Spoiler on my sons car, just had to drill the holes from underneath the trunk, and got it all lined up, it looks great as well, so both options are nice to have, here's his for comparison
Yes, I set it all up, adjusting it to make sure it was completely even and marked the holes from underneath through the trunk original hole locations, then matched up a drill bit just a bit smaller than the bolts that came in the wing, I was uncertain if the new location would be shorter that...
Both end plates are metal, no drilling of the decklid, just aligned everything up, marked my holes from underneath with a red sharpie and drilled the spoiler for the new placement, everything bolted down after that with no issues and looks perfect