last night i ordered the zdz 80. i asked for the free failsafe . then i found a six pound weight that the girlfriend had lying around and placed that inside the plane so i can get an estimate on the weight. and it came in at 22.6 pounds. im hoping i will be able to keep the weight of the engine below that to make this plane about 21 pounds. with the 55+ pounds of thrust that TBM claims this plane outta rocket out of hovers. ill let you guys know how she performs when i get the engine. thanks