Tall, the opening post reveals that this glider is a pusher. The motor is apparently mounted at or below the wing trailing edge, in a position where anything bigger than 8" will hit the backbone of the fuselage. Hobby Lobby used to have a large 500 powered glider of similar size that used an 8" prop, but I don't see it in catalog 44. It would be similar in format to the Tipsy on page 5.