Thinking -- and acting -- outside the box, as GM Omar Minaya says he likes to do, the Mets are pursuing a career shortstop to play second base and provide some of the fire the team lacked last season. Free agent David Eckstein and not Luis Castillo appears to be the Mets' primary target for second base. The 32-year-old veteran, the shortstop for two World Series champion teams in the last six seasons, has been wined and dined by the Mets according to a report in the New York Daily News on Saturday. The paper reported the Mets' interest, though it said it couldn't measure Eckstein's interest in changing teams or positions.