425 hp wow. We have a TD-20E with 275 hp, I thought that was a lot. My dad put a L10 in the 20E, (just like a G), but it come out of a dump truck, so that's why it had more horsepower. I did get the 20E to stop spinning the tracks though. There was this giant rock on a hill by a guys lane. Dad pulled it down the hill with the Komatsu 250-6 excavator. But once it was on the ground dad pulled while I pushed with the 20E. It was all we could do to move it one corner at a time. I would lift the blade while pushing to get more traction. One time I even pushed on the back of dad's bucket. Perfect job for the old 20E.