Ford a#39;64 Light, Medium Line Shows Many Fine Features SPARKLING. ... Heavier frames for F-100 and F- 250 pickups and F-500 models give greater durability to these trucks, Mr. Lewis said. ... Through the use of new metal support straps, the tailgate alone will support 2, 000 pounds. ... and lOV^-inch heavy-duty clutch with three-speed manual transmission and 11 -inch heavy-duty clutch with the four-anbsp;...