Magnum 1.08
It won't be too much power, I have a Magnum 1.08 in a Global Freestyle 46. The plane is rated for a .46 2-stroke or .61 4-stroke but it was pathetic with a Magnum .61 4-stroke, ok with a YS .63 4-stroke, and is nicely overpowered with the 1.08. I haven't gotten the motor broken in yet, it seems to be taking a bit, I have about 1/3 gallon through it yet and it still 4-cycles even set lean. Anyone run a Magnum 1.08? It's a true ABC piston/sleeve so it should take a little longer than a nickle plated liner.
My weight went from 6lbs 1oz up to 6lbs 10oz. It's not light but it IS fun! The thick wing seems to produce enough lift that I haven't noticed the difference in weight very much. In this pic it still had the YS .63FZ engine.
-Tom