Actually he manufactures the A-10 kit. His first model used the airfoil from a glider. Obviously it didnt look like a glider wing. It was done like this to conserve weight and make it so it wouldnt drop like a rock if he went dead stick. One of the companies that make the gas powered turbines sent him a pair in return for a pair of the A-10 kits Lucky bastard

His original, though, did have gas props and not turbines.