ORIGINAL: PaulD
I heard some guys in eastern Canada were dropping the Behotec 180's in the smaller Scorpion with no problems. Your Wren will fly it fine but if u want the speed then u will want to upsize the powerplant. I think you would be better off with a 180 class engine than going to a big block like a P200 with all the extra weight and fuel consumption
PaulD
Never flown it but, I've seen the reg. Scorpion fly many times with a Behotec 180 as the dealer (Altecarerc.com) is local to me and we often fly together. Performance is superb with that engine. Just a joy to watch this plane perform with that combo.
Mike