PorscheFan5 - the center wind deflector clips into the space between the headrest bumps in the roll-bar. Together with the meshes, it helps cut aerodynamic turbulence in the cockpit with the top down. (damn, that sounded so NASA-ese).
__________________
2001 Boxster S - Speed Yellow, Black Leather, Tiptronic, Jake Raby rebuilt 3.2 with IMS Solution