Ended up returning the kit and getting a rebuilt unit. The control valve is actually out of a 67. I'm guessing the rest of the steering is also 67.The problem I'm having is the car wants to drift around on the road. I've replaced upper and lower arms,Front and rear springs,shocks all around,outer tie rod ends.The car was alligned with still the same problem. The steering box is tight with no excessive play.I just can't seem to find anyone local who can help me.I do belong to a club but just about all the members are older and don't work on their own cars.I really want to drive the car but because of the steering problem it's a safety risk. Thanks so much, Henry