Mid sized tractors run from about 45 hp to 75 hp. Typically they run on diesel. My tractor is an older Massey Ferguson 150 with a gasoline Perkins, 3 cylinder engine. I live on a lot with lots of feral pecan trees that are too close to each other that need to be thinned out. Pecan is a very energy dense form of wood. Also, many local farmers trim their trees or limbs that fall off trees, and they would be all to happy for me to haul this off for them. In fact, if I can show them how it’s done with my tractor, lots of farmers around here would be happy to convert one of their tractors to wood power in case fuel costs get too high again. A wood gassifier kit set up would need to be compact and out of the way for field and utility use. The nice thing about using a kit on a formerly gasoline powered tractor is they usually have a pto on the back that is used to power a lot of implements from rototillers, wood chippers, to generators, and much more, so a tractor conversion would be very useful for a lot of chores around the farm. Would you have plans for something that would work on tractors of mid range power abilities?