can anyone tell me the size of the splines on a 65 barracuda power steering gear box on end going to column? I have read there were two sizes .625 and .725 the larger one being for power steering.i purchased a used original coupler for a 65 barracuda with power steering .I received the large coupler which the seller says is correct for the car. but the gear box on the car is power steering but with the smaller diameter.i am thinking I have the wrong gear box .