I stand corrected. Memory going.
The twin-engined replica bomber is the world's largest flying biplane, has a 70' wingspan and 4-bladed 10' propellers, stands over 15' high and will weigh over 6 tonnes fully laden on takeoff. It is built of wood, metal and fabric - just as was the original some 86 years ago, but as the original Rolls Royce Eagle V-12 engines are, understandably, hard to find, the aircraft has been powered by a number of different automotive-based engines - first from Chevrolet and then BMW - and now by a pair of 8.4 litre Canadian-built Orenda V8's, aero motors developed from a General Motors truck engine design.