Sox and Martin 1967

Hi Guys,

I'm not sure if this is true but I have been told that Sox and Martin tested the yet to be released 426 hemi in a 1967 Barracuda Fastback formula S.
A couple of questions for anyone who knows.
1.Is this correct
2.Is there any photos or documentation of the test car to prove this.
3.What happened to it , if there was one.

Thanks.