That crawler is just one of a few creations done by a gentleman by the name of Dan Hoffler. I have seen that beauty up close and his "Hi-Crop" and "FWD" Cub Cadet 100. His work is increadable . Great guy to. He was at the Little G show in Dyersville IA last year. Hope he is there again.
His collection is said to be coming to the John Deere Garden tractor Spring tillage day in Menomonie, WI on April 26th. It is an open event and I think that the "Big" Cub's are welcome.