Here are some pics of my inverted Viper. I had to cut a new shape for the wing saddle to match the top of the airfoil, but there is just enough room so that the blind nuts in the fuselage don`t have to be moved. I had to drill a new angle for the wing bolts and make a cut to recess the V tail farther up into the fuselage. All of this took about 45min and other than making a top hatch, this should be the only extra work required to make the change. Oh, I will have to put hard points in the bottom of the wing to mount the main gear to, and I will have to turn the touque rods over, but I read that the torque rods need to be upgraded anyway.