So I decided to get rid of the fairing. I need more space for gimbal (cameras,radio) and a custom propeller.

It was necessary to strengthen the frame. I used aluminum and rivets. Now she is strong enough and weighs less than before - 275g.

Just received X-UAV Skua, 

and found differences in the characteristics from x-uav.cn site:

Guide recommends the motor 2820 (3720) and 4*9g servo (2*9,2*17)

Good thing I do not have these parts. I think about using the lower tank, and the upper compartment. The upper part is not much room, while the bottom is not too suitable for installation of camera gimbal. So i think about some modification.