this is the Sig Somethin Extra i built back in the early 2000's i flew it mostly on floats with a O.S FS 91with 14 X 6 prop way over powered but so much fun to fly , would do all the 3D you could throw at it including Lomcevaks , flat spins right side up and inverted , hovers , snap rolls , i sill have this plane may have to break it out for some more fun , i did up the CS i have on this plane will upload it too.