And to add to the information, IH made several changes to the Quiet Line series during it's production. They changed the steering column to one that was 1 inch longer. They changed the front spindles from a 3/4 inch to a 1 inch. And they switched from manual style transmission pressure relief valves to the auto relief valves. Your came from the factory with the longer steering column and the auto relief valves, but it came with the 3/4" spindles.