RE: 26 Size engine Zenoah or Evolution??
I have a usl120 with a evolution 26gt2 and can't say enough good about this combo. I know first hand that if you use a stock zenoah on the front of that bird you will need to move the servo's to the rear of the plane adn maybe your flight battery as well. This is why I went with the evo 26 instead. It has enough power to hang on the prop and then some. In fact this is my most flown plane I have. I take it with every time I fly. Heck if it wasn't 25 degree's out I'd be flying it now. If you want pics of it set up with the evo just say so and I'll take some.
Kevin