Ford - 1960s Fords - identify wheel studs? - No FM2R
There must be a local engineering shop which would make you a bolt to your spec.?
I think trying to find the Ford it relates to just so that you can buy it off the shelf is the hard way.
1) Have a bolt custom made by a local engineering shop.
2) Change the hubs to whatever the local scrappy has got. I'm guessing a Ford type might easily fit.