I'm with Foxtrapper on this one. The original wood was perfect. Possibly it's best feature was that it didn't stand out significantly: simple, nicely-finished hardwood.
There are a number of woods that look good on these cars. Stick with something that approximates the original wood and finish. The French fiddleback walnut in the photo, above, looks fabulous, IMHO.
I've seen the gamut on dash woods, from light and grainy to dark and gloomy; with no finish at all, to shinier than a mirror with ten coats of polyurethane (yech!). None seem to look right, and most pale in comparison to the beauty of the OEM wood grain, finish and color. A fair number of them end up looking like a pimpmobile.
Stick with a wood that approximates the original grain, color and finish, you simply cannot go wrong!