That is the port installed spoiler which is not exactly aftermarket. It is still considered a "factory" option, it just wasn't install at the factory! My 06 has the factory installed spoiler which has the ugly "hump" on top, but only has one top brake light instead of both.I think you must have an aftermarket spoiler. I just ordered one for my 07 and i was told both will work. It's to keep the idiot lights on the dash at bay.