My grandpa owned an IH dealership in Watertown MN. I have seen pictures (but do not remember) of me sitting on a brand new 560 and of me sitting on my 560 peddle tractor. I do remember playing on the new 06 and 56 series tractors at his dealership. I guess that is why I favor my 06 and 56 series tractors. Don't seem to recall the 66 series as much, think that may be about the time we moved to Montana.