from what ive heard fitment varies ive seen some that fit nice but not great and others that fit ok.....and like most ebay c/f items the clear coat im sure will peal off after awhile pretty much you get what you pay for with them.....and i do remember Hatchie on here bought one i dont know if it was ebay but if you have a rear washer setup they dont have openings for one so you would have to cut and make it fit....
just my 2cents screw the c/f and get a 2peice led oem rear spoiler or the full one peice, the 2 peice ive seen fro around 150 and in my mind thats a great price fro something that you know will fit and work well with what you need and be legal as again the duckbills on ebay most dont have a 3rd brake light and this would be an illegal mod if found out and you need a 3rd brake light at least in NYS and i think the whole United states etc....
So to recap i dont see anything awesomely note worthy with the c/f ebay duckbills they fit ok and the clear coat will probaly peal
my option would be to get either the oem 2 peice led larger spoiler or the full one peice
1pc
http://cgi.ebay.com/ebaymotors/JDM-HOND ... 19c4996a1b