I have a 1.80 so I would like to use it. Also have a OS .91FS that is currently on a Hog Bipe. Don't want to buy both the plane and a new engine. Doubt that magnum 1.8 hs more power than Saito 1.5 but I'm sure it weights more. I see that some a using gas engines so weight should not be a major problem. Still debating the purchase.