http://www.exoticwooddash.com/mercedes.htm
Sparkyt -- I was following along on the thread -- check out the above website -- they offer wood and carbon-fiber dash kits. I don't know this company or the quality (or lack thereof) of their product, it was just a site that I found while looking for similar information. Scroll down to 450Sl/SLC.
If you use them I would be interested in knowing what you think of their product. Best of luck.