ORIGINAL: Zippi
I've been checking this plane out and have a Brillelli 40cc with the RTF weight of 51 oz, that includes the muffler. They show the Evolution 35GT2 installed in this plane with a custom in cowl muffler and that engine weighs 52.8 oz without the muffler. I currently have this engine in a QQ YAK 54 at 12.5 lbs and it's awsome. This should be a good match up for the Sundowner coming in at 12.0-14.0 lbs .
I have the same engine... Waiting for the plane to arrive... Have to see how it fits... Have a pitts muffler on it now.