im not fan of copy stuff (tried in past and not been happy but odd occasion you get items that are very good)
i spent ages lookin for genuine spoon spoiler and got screwed by someone so in the end just bought a copy (im not brand whore so wasnt arsed), fits well and from funtion point has design i was lookin for, quality is also very good, gap between body of car is little big compared to oem but not to fussed
have to say love both seeker spoilers but could never justify price and although i dont know anything about aerodynamics they seem to offer additional benefit over oem which i like