Quote Originally Posted by Heliomance View Post
I forget - according to the Savage Species type pyramid, which takes precedence, undead or construct?
According to the sourcebook, yes.

Quote Originally Posted by Type Pyramid
Construct, Outsider, Undead: These three types resideat the top of the pyramid. Once a creature becomes an undead or a construct through the application of a templete, it cannot become something else. Once a creature stops being a native of the Material Plane, it becomes an outsider and stays one.