I have a Magnum .30 that I put on a Global T6, haven't flown it yet. I don't think the Saito .30 weighs much less so I think it is too heavy for a Sig Wonder. It has about the power of a .20 two stroke, say maybe a plain bearing run of the mill .20. As such it may be a bit small for a Talercraft .25, Sig LT .25, Ultra Stick .25, and the Tequla Sunrise. Maybe with a lot of nitro? It will fly them but not as well as a plain vanilla two stroke .25