hey all I found a completely restored jd400 including rebuild kohler 20hp engine with 60" deck and 54" hyd plow I read some on them and they seem to be decent tractors. I am looking for a do all tractor to cut my grass every week 1.5 acres , plow snow in the winter , drag down trees to cut up , push dirt etc. is 3500.00 a fair price? its a bit more then I wanted to spend but its a clean old tractor. any help on info about the 400 would be great.