yes 57 was the year they changed, and the column was a few inches shorter with the dished wheel, and I doubt the factory would have used a 56 wheel and column in a 57 truck, certainly wouldn't have used the 56 wheel with a 57 column ... keep in mind that the truck is 50 years old, much more likely some po changed the wheel, in which case you'd have more room between your belly and the wheel - try measuring the column to compare with others here
Bill
