We have a #36 Massey Ferguson that my dad bought new in early 70's. Still use it for swathing oats, and it's very handy for mowing grass around the farm where maneuvering a tractor and haybine is too difficult. Last week I cut 4 acres of oats with it, that I'm combining now. It has a Chrysler slant 6 motor and is belt driven. It has a conditioner, but we don't have it under the machine usually, since it doesn't do much with the two rubber rollers.