The Dash 80 fuselage was wide enough at 132 inches (3.35 m) for five-abreast seating; two on one side of the aisle and three on the other. The fuselage diameter for the production KC-135 was widened to 144 inches (3.66 m) and Boeing originally hoped to build the 707 fuselage with that width. By the time the Boeing company committed to production, the decision had been made to design the production model 707 as a six-abreast design, with a larger 148 inches (3.76 m) diameter fuselage, after C.R. Smith, CEO of American Airlines, told Boeing he wouldn't buy the 707 unless it was an inch wider than the then-proposed Douglas DC-8 passenger jet. This decision did not unduly delay introduction of the production model since the -80 had been largely hand-built, using little production tooling