FWIW, brother had a 1456 with a Hiniker cab. Not much noise reduction. It was nice when the a/c was working. Not so much when it wasn't. He bought the tractor in the spring of 1978. I don't remember the year model of the tractor. Can't remember if it said "Farmall" or "International" on the side. I do remember it had "Turbo"near the front of the hood. We had a guy named Toby working for us at the time and when my mom saw the "Turbo" on it she said, "It's already got Toby's name on it." I think the only time he ever drove it was to bring it home from the dealership. I was the one who got stuck with it. Toby got the 4630 that dad bought right after that. Why did the hired help get to drive the better tractor?????