I've just started on this ARF and am considering the RCV 58CD, Saito FA-82a or maybe buying the the new Saito FA-62 for this plane.

I own a Magnum 4-stroke, but have not run it yet. I hear they're not as powerful as other engines in the same class.

My main concern, since the plane is relatively light and should fly with a smaller engine, is fitting the engine inside the cowl without cutting most of it away. The supplied louvers, if opened should draw good airflow.