1979 Ford L-Line 600-800 Series Truck Sales Brochure. Ford! America's best-selling medium and heavy trucks. Popular L- and LN-Series trucks are important reasons for Ford's sales leadership in the overall medium/heavy truck market. Popular because Ford brings to this class of trucks many of the quality features that the biggest L-Line trucks have built their reputation upon. Chart gives info for LN-600, LN-700, LN-7000, L & LN-800, LNT-800, LT-800 and LTS 800. L-line options on the back. Condition: some soiling/spotting. See pics.