[timothale]

be aware that different internals were used in the same castings, make some rear steer and others front steer. When I worked at Ford, they shipped several pallets of Mercury steering gears to the Truck factory, every thing bolted up. The guy at the end of the assembly line had to make a sharp right turn to go the the chassis dyno for first test, He turned the wheel right and gunned the gas, the truck went left and almost wiped out the seat cushion builders. Some chrysler cars and dodge trucks also shared the same castings, and have opposite internals.