they dont just make the parts and HOPE that they fit...they have to rely on either the companies ability to purchase a vehicle for testing, or in the case of some companies, they rely on regular people who want to get a free part for letting the company in question thrash the car for a while.

either way, would you buy a part, or even consider it, from a company who has guaranteed NO R&D on the vehicle? i sure wouldnt, who knows if it will fit, or if its better than the OEM setup. id bet that they have that listed just so that people will visit their site, as search engines hunt for things like that, and having it now will put them above other companies once the car is released.