RE: Sportsman Aviation Paramount 52/70 3D ARF Conversion and Review
In the photos below you can see the motor mount secured to the firewall using 4 socket head screws, washers and blind nuts. The motor is secured to the mount using 4 socket head screws (not supplied with the mount).
I drilled a large hole in the firewall as you can see in the photos right behind the hole in the mount. This was to save weight but more importantly to allow for airflow to the batteries/esc in the fuselage. I also drilled extra air holes in the firewall (see pics).