It's part of the double din dash kit.
If you're looking for the outer trim for the actual "head unit" itself they're normally applied only if the face of the unit extends beyond the dash. Usually, installed only on single din units.
EDIT: Apparently I'm late and answered the question entirely wrong.
However, call crutchfield and get the answer from an employee instead. Their computer database purposefully tells us "no" if there's space limitations(meaning it's a tight fit) or concerns about proper install.
