TABLE-Top-20 selling vehicles in U.S. through March

April 2 (Reuters) - The following are the 20 top-selling vehicles in the U.S. through March of 2013 as reported by the automakers and ranked by total units. Top 20 selling vehicles in U.S. in March RANK VEHICLE March LAST YR % CHNG 1 Ford F-Series P/U 67,513 58,061 +16.3 2 Chevy Silverado-C/K P/U 39,561 36,491 +8.4 3 Nissan Altima 37,763 41,050 -8.0 4 Toyota Camry 37,663 42,567 -11