In 1967, the smaller, short-range 737 twinjet was the logical airplane to complement the 707 and the 727. There was increasing demand for transports in its category, but the 737 faced heavy competition from the Douglas DC-9 and the British Aircraft Corp. BAC-111. To save production time, and get the plane on the market as soon as possible, Boeing gave the 737 the same upper-lobe fuselage as the 707 and 727, so the same upper-deck cargo pallets could be used for all three jets. The 737 later adopted the 727's cargo convertible features, which allowed the interior to be changed from passenger to cargo use in the 737-200 series.