Follow up on the headstock binding: I found this kit from a supplier (referenced at the beginning of the thread) who used to have kits that took a rather libertine approach to intellectual property rights and was offering one that had a certain trademarked headstock shape with the 'custom' style binding. Needless to say they don't offer such things anymore.
If I were starting this project from scratch and had to modify a blank headstock I would probably either brush up on my router skills and shape and bind the headstock on my own, or be lazier and buy an overlay.