1982 Ford LN-Series 600-7000 Truck Sales Brochure. America's Medium Truck. Built Ford Tough with Premium HD Truck Features. Ford LN-Series Mediums bring to this class of truck many of the quality features that the biggest L-Line trucks have built their reputation upon. They all share a premium tilting fiberglass front end, strong all-welded steel cabs and many more big truck features. And you can specify your choice of thrifty power-gasoline, LP-Gas or diesel. Highlights interior features and series features. Includes options and specifications for LN-600, LN-700, LN-7000 (diesel).