You can mount the full fairing and the headlight assembly from a Kawasaki Ninja 650R onto the ER6N , you will need all the original mounts, nuts, bolts and grommets form a Kawasaki dealer. Some mounts probably will need to be welded on the chassis. This way you will get a neater fit that resembles the stock Kawasaki Ninja 650R more closely.
Also the complete Kawasaki Ninja 650R fairing probably costs a small fortune, and you may want to look at alternatives from companies like Catalyst Racing Composites who sell aftermarket Kawasaki fairing a bit more affordable.
Anyway, selling your Kawasaki ER6N and buy back a Kawasaki Ninja 650R is the cheapest solution...
I own a Kawasaki ER6N. Can I have the sporty fairing of the Kawasaki Ninja 650R installed on my ER6N? How can it be done and what other extra modifications can be done to the Kawasaki ER6N either for extra power or for the looks?