The mockups definitely had a 767 like APU tail section. It was probably easy to just adopt the existing 767 widebody design... eventually the 777 got its own flavor of tail cap and APU exhaust...
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The mockups definitely had a 767 like APU tail section. It was probably easy to just adopt the existing 767 widebody design... eventually the 777 got its own flavor of tail cap and APU exhaust...