I think you need to check Yahoo groups for a MF lawn tractor group.
I got a phone number from a fellow in PA? years ago that was going to have some of those nose pieces cast in aluminum off that website. I even talked to him once but he had none to sell although he was going to have more made. After that, everytime I tried to return his calls the number would be picked up by a fax machine so I never got up with him.