Well, I can't afford an Antonio Carraro but the concept of reversing the drive on a tractor fascinated me. So many things are more visible. I had driven an International years back with a fork lift so I knew it had been done.

Here is an old Allis Chalmers WD or WD45 that has been reversed. He is using the original hydraulic pump which put out good pressure (3,000 pounds +) but it is low volume. And that engine isn't running very smooth, but the paint is nice:

[link to www.youtube.com (secure)] (2 minutes)