It is either a Retrospec "Downforce" spoiler or a clone. Mike Kelly had one on "Sasha-Gray." It had no mounting system, just a big plug of CF. I put aluminum rivet nuts in it and bolted thru the rear deck skin to mount it. Mine was warped and stands off the passenger fender about an inch while the driver side hits the fender and dings the paint. As a compromise, I made a thick gasket a sheet of 1/4" rubber from the local gasket and o-ring company to space the spoiler off, then put high density foam under the ends to take up the air space. There was a thread earlier this year by a guy who was upset because of poor composite part quality. I'm afraid it is what it is. We can either bitch about it, make parts ourselves, or learn to make aftermarket parts work.