After many years of delay, I finally got a copy of
"Mustang SVO The Machine Speaks For Itself"
by
David LaRocque
I haven't gotten in to it too far yet but it has a great section on the beginnings of the SVO operation.
I didn't realize the original plan called for a Capri SVO as well as Mustang SVO.
Looks like some very interesting SVO information in this book.