Yes, i can.
Fast Cargo has developed a method, we call it the "fake pilot", to attach "parts" on excisting aircraft where you have no acces to the max file. Pilots are also 3D models, sme as ejection seats, you can place them free on any aircraft. Now create a different object like antenas or Canards (they are now movable, just static) and place them in the same manner as an ejection seat. So you can develop other variants of one and the same plane.
as an example check this out ;)
The complete nose is added with the fakepilotmethod to this plane, same as the pylons. This nose is located in the "pilot" folder and linked with a specific entry in the "planename_data.ini" inside the plane folder.
Thats all ;)