there's a guy on the other 9th civic forum that's done it. dunno if he's here as well.
it fits, but not a direct fit from what i've read. I was wondering to if it works both ways, 2012 wing on 2013/2014.
i have a 2014 spoiler on my 2012 Si. The only other thing i did was get a 2012 Ex trunk garnish instead of the Si one. But this is referring to the Coupe. I haven't done any research at all on the Sedans, so i can't help you there.