HEY GUYS I JUST BOUGHT A 05 XTERRA S MODEL 4X4. I USED TO HAVE A LOCKER ON MY OLD TRUCK AND I WAS WONDERING IF IT IS POSSIBLE TO BUY THE LOCKER FROM THE OFF ROAD MODEL AND HAVE NISSAN INSTALL IT. AND IF NOT ARE THERE ANY AFTERMARKET LOCKERS FOR THE XTERRA. THANKS FOR ANY FEEDBACK