My '66 GMC has factory power steering (ram piston, control valve, etc.) that is leaking and probably worn out. I would like to replace it, but with the drag link set up, pitman arm, etc., I don't think I can use one of the newer internal power steeting boxes. Is there a kit to convert existing power steering components, or just replace the existing ram, control valve, steering box, hoses, etc.? Is there a quick ratio manual box that would work in this situation?

Thanks