I would recommend American Stamping rails as they are the best I have seen. They are round on the edges just like the originals. If memory serves me right, the brother of the owner of The Duece Factory (CA) is the owner of American Stamping. I certainly recommend them as they are top quality street rodders.

As for plans, I remember Wescott Fiberglass drew them up and published them many years ago. I bet they will send you a copy of the blue prints if you ask them.