Where did you hear about this? This is an old, old story...about 10 or 12 years ago. And not true besides. I'm a Vietnam vet, and certainly no fan of Fonda, but...just saying.
Means nothing to me as an Englishman (never even knew until I googled it) but I though this was a Rat Rod forum and there must surely be hundreds of sites dedicated to the subject matter that might be more suited.