I have a 1980 malibu. i have power steering and the seal on my steering gear box blew out so im leaking a good amount of fluid. For some reason, I cant find a gear box that looks like mine. all of the other have the arm that comes down underneath the unit and mine has a spot where a line goes from the back of the power steering pump into the top of the steering gear box. does anyone know what type of box i have?