Who ever said that EVERYTHING has to be four eye specs, (#1) like the quarter windows, taillights, spoiler, mirrors, doors and the interior. I agree on the side moldings and rear bumper. But it seems like you just threw in those other things (#2)to prove a stupid point. The guys point is to make his car (aero) with a four eye front end. I think it would be cooler to convert the car with only the small body mods cause you will think its a four eye but then you will really find out that its originally an aero car by leaving the interior and mirrors and stuff like that.
(#3)I think your "lesson" is pointless because its his car and hes gonna do what ever he feels he wants to do to it.