years interchangeable? this guy near me has one for sale, but neither of us know what its worth, looks like my brothers, so I,m assuming its relatively new, #on the tail end are #232.0.139.00 and on either side of the roundel stamped in back are 4.2 & 225, does this mean anything, it seemed to go into the gears fine and the shift lever was sloppy at all! thanks CHrisl