Convertible vehicle topwell drainage arrangement

A topwell assembly drainage arrangement for an automotive vehicle body comprising:

• a molded, rigid shell-like topwell assembly for attachment to the vehicle body and made of plastic material molded to conform to an environment of continuous and non-continuous surfaces, comprising a support floor together with side, front and rear walls projecting upwardly from said floor, said floor having a water discharge recess adapted to receive run-off water drainage;
• said recess having a frusto-conical shaped side wall defining an upper large diameter inlet opening in the surface of said floor and terminating in a lower small diameter base wall, said base wall having a concentric central outlet hole therein aligned on a principal axis of symmetry of said recess;
• a plurality of fasteners for fixedly installing said topwell assembly floor a predetermined dimension above a subjacent horizontally disposed body support panel having an aperture therein;
• a water discharge one-piece fitting mounted in said support panel aperture prior to said topwell assembly being installed thereabove, whereby upon said assembly being installed the center of said support panel aperture is aligned on said recess principal axis;
• said fitting having an annular body side wall defining an upper large diameter opening and terminating in a lower bottom wall, a collar extending radially outwardly from said upper opening and said bottom wall formed with a downwardly extending spout defining an axial passageway for water exiting said recess;
• and
• said collar having side edges formed with oppositely facing downwardly projecting tabs adapted for snap-in reception in said support panel aperture.