Yea I think the power plant is decent, the gt had 17 hp and torque maybe 5-8 less, and I want to ground engage, so I want to run some angle or flat stock down the length of the frame for reinforcement, and that will leave the spindles as the last main weak point. I think .. also I believe there are ports for aux hydraulics on the bottom of the new trannyI had to look. 23 hp to turn a 48" deck and a inadequate diff for anything but level ground. Even in a lawn tractor just appear to be something stupid going on. A new frame on the diff and you may have a decent tractor when done.