Two new names from Shelby history (new to me)

I was reading about the creation of the 427 Cobra chassis
and I thought that Klaus Arning of Ford designed it
but this book said that Jim Benevides (Benavides?) and Ken Miles
did the initial plans for it.
And then there's a British book on Cobra that says Stu Turner at AC
did it all and that he was miffed the Americans took all the credit.
Anyhow just want to know if Jim Benevides is on the scene today
and can be contacted?