Really interested to know how this project turned out.... I have a 5145 belarus which is the new version of a 532 its 57 hp rated but the same engine as a 562 which is a 70 hp tractor the only difference i can tell is the injection same engine block as the 70 hp tractor. I'd like to turn my tractor up to compensate for the weight (57 hp on the same frame as the 90 hp tractor) it struggles when brush hogging on these steep VA mountain sides and i don't use a tractor enough to justify buying a bigger one