I've been thinking about upgrading from my ancient Farmall 350 to a little more modern tractor. I've owned the 350 for 20 years and have learned all its weaknesses and it has one issue that may soon lead to it being worthless to me (PTO). Farm estate auction coming up has an Allis 160 on it - simply says low hours and its looks like a tractor from the 1970s - not especially clean but it also doesn't look like it been used on a loader. Any known issues with these? Are they especially hard to find parts for? I don't know if it has the 10 speed or 6 speed transmission. Just looking at it I would guess it has the original tires with a little less than half tread.