The Dow had its best week in two years as it gained 1.36 percent today to close at 12,582.77, as several housing stocks also advanced.  The Manufactured Housing Composite gained 1.35 percent to end the week at 1159.60.  Cavco Industries gained 2.31 percent, ELS was up 2.24 percent, Sun Communities advanced 1.74 percent, MSCI gained .61 percent and Skyline Corporation moved up .40 percent.  Nobility Homes lost 2.88 percent.  Palm Harbor Homes and Deer Valley remained flat.