I have a 1968 farmall 656 hydro with a little over 8400 hours on it, runs good many new parts. New hydraulic pumps, seat, rops etc.... tires about 50% . Hydro is strong. But I was looking at a 706 with a little over 4500 hours with fairly new tires has a 282 in it. Needs some work like grill is missing along with the fenders and a few small pieces of sheet metal. Don't know how well it runs but was told it runs good. Don't know if the torque amplifier works or not. So my question is should I keep the 656 and try and buy the 706 or should I trade? I like the 656 but just not what to do and want some opinions first.