Dave: I've never done it, but I just bought a book at Barnes & Noble yesterday called "Sheet Metal Handbook" by HP Books. It doesn's specifically go into a track nose, but it does discuss using a wooden buck to form things like that.

In one of my old rod magazines there is an article on just such a project, and I think the guy built a male buck and formed the metal over it. One of our sharp members will probably be able to tell you the magazine, or others with similiar articles. One of the magazines, I think Street Rodder, had a series called "Professor Hammer", and he did these sorts of tasks.