Rich,
This is a tough call on an assembled car. The material cost for the dye and the etching material (recommended) is nearly the same as a new '55-'56 dash cover in your choice of color. Think this through. You know what your skill level and patience are better than anyone. Let that be your guide.
Everything you need regardless which route you choose, is available from Classic Auto Supply.
(800) 374-0914 or
http://www.classictbird.com
What ever you decide; it will be worth the effort.
Tom