I flew my 66 inch extra with both a Magnum and Thunder Tiger 91 4 stroke on it. Both engines flew the plane nicely with good vertical. The TT engine is much stronger than the Magnum and will pull the same prop at the same RPM as a Saito 100. It weights about 2.5 oz more than the saito. I was able to balance the plane without adding any additional weight to it with the TT engine. A saito 100 will pull this plane really good with unlimited vertical performance. It will be a nice match.

Rick