My car has never had fog lights and I do not see it being possible to retain the stockers. Also, my bumper cover is really modified, not to clear the IC, but because I got happy with a sawsall and a good idea that could've been executed better. Click my build thread to see some front shots of the car. The pics are towards the end of the thread. Wop is right by suggesting a 10" core. It isn't impossible to fit the 12", but I would go 10" if I could do it again.