I think you need to be a little careful with those tractor seats, or anything that is a big higher. It will change the center of gravity. The Greenfields are one of the better ones for a low center of gravity. For my property it is just low enough with one part of a slope. If you have a flat block, then go for it, but I have to pass on it. It would probably look really out of place on my old TE20, too!
