If you buy one of those generator/pump/ram combos these days, your checkbook will need some CPR. The system didn't work well when it was new, and over half a century later, it hasn't gotten any better. Hanging the power unit and hydraulic hoses out in the open and constantly flexing the lines is one of the dumbest ideas a car designer ever came up with. The electric power assist involves the least amount of butchery of the steering system, and retains all the original geometry of the straight axle setup.
Jerry