My Lambo SV has all the aeros and I think I can tune the front, but I'm not entirely sure. I'm at work so I can't check it at the moment (plus B-Spec Bob is running the Suzuka 1000, so even if i was home I couldn't check).
I do know that the front kit (not the extension) on the McLaren F1 does not let you make adjustments. (I didn't want to add the extensions on that car for fear of making it look gaudy)