apply the aero kit and then in the section on the terminal where you change your wing you can choose "no dressup" which removes the wing.
you can't have some parts of the aero set and not others except for the wing, pretty much. if you want the foglights you have to get the aero set too but you can remove the wing.
you'd be best off asking this sort of stuff in the
dedicated q&a thread or on the wmmt nac fb group
here than making individual threads.
This post has been edited by WRX22B1998 on Feb 17 2019, 03:00 PM