The Sig is all laser cut, and is a more advanced build than the LT, but it is a straightforward build, the plans and instructions are first rate. Helluva good flying plane; mine is full span, but like Nony says, the clipped wing will let you kick up your heels a bit more. Best power is with a .65 or better 4-stroke, a .72 or .82 would be great for clipped wings. I don't even consider a 2-stroke in a Cub, it's sacriligious.