Top Flite Elder .40 Size Kit FEATURES: Top Flite is bringing back the Classic Elder 40, with one major distinction: Gold Edition CAD engineering; An Ideal Second model INCLUDES: One Glow Powered Top Flite Gold Edition Elder .40 Sport Scale Kit with all wood to construct the airplane, pushrods, .12 (3mm) prebent wire REQUIRES: Engine: .40-.46 (6.5-7.5cc) (2-stroke) OR .52 (8.5cc)(4-stroke) Muffler: Engine mounts inverted, if using 4-stroke, stock muffler of engine