In 1977 it became the best-selling truck in America and in 1982 F-Series was so popular with buyers it was the top-selling vehicle in the US. Though the Toyota Hilux is more wide-spread and dominates some of the most rugged continents on Earth its global sales are half what the F-series sales are in the US alone. Want The Biggest Meanest Pickup In The Hood Try This Six Door 2005 Ford F650 Carscoops What people can do however is buy a 64L-powered truck for under 10000 spend about 5000 to 7000 on conversion parts less engine and end up with a Cummins F-series for under 30000 With Cummins legendary reliability and Fords robust body and frame construction a 67L I-6 might just be the cure for those suffering the Power Stroke blues. Biggest f series truck . It has been there ever since. Fords burly F-Series is second only to the Volkswagen Beetle as one of the highest-selling nameplates of all time on planet Earth accumulating a total of more than 33000000 units sold since its bold intro...