This Mustang was not done by the Ring Brothers. I went to their site and they don't show any info on it. After more searching I found it here:
http://www.ponysite.de/news.htm and searching the company names listed there, I found the builder here:
http://www.autoworksracing.com/proje...ng_67_supe.htm
The second rendering and finished product looks alot better than the original rendering. The cowl is over the top but like the first site said you can "Obsidianize" your very own any way you want.
Mal