Originally Posted by buzzard bait

The Sig Cub is lightly built compared to the Goldberg or GP Cubs, and absolutely they fly well on a 26 FS. The Saito 62 is a wonderful engine, but way too much power for the Sig Cub. And wait till you put it up against the plan and it doesn't fit. An experienced builder can modify it, but is that really what you want to fuss with?

For your Kadet a 46 is a lot of power, unless it is an OS 46 LA, which would be fine. If it's a ball bearing type, it will be WAY more power than you need. As people will say, 'you can always throttle back'. But you might be surprised at how little movement of the throttle stick will give you more power than you want. I've been an instructor for many years and I know what happens when a beginner suddenly gets more power than he can handle. Of course, the instructor with a buddy box can take over, but it's not an effective way to learn. Don't you want to be able to enjoy your airplanes?