First picture is inside view of John Jackson's FMS P-51 B with Retracts, Sound System (red circuit board), and Removable Battery Tray (white plastic). See YouTube Video
Second picture is John's Golden Skies Bampf 3D Extreme. This plane weighs 9 lbs, and was updated to a 20 cc gas engine. John uses 100 octane aviation fuel that does not smell like automotive gasoline.
