Sorry Bob, I should have just left that part out of the story. It is a 27F that has been gutted, that I use in my 70 SCJ. (I'm sure it came from Dick, so I THOUGHT it was out of his big block car. Must have been for something else, but as far as I remember, he only had one big block and that was the Shelby).
I will measure the J-Hooks again, but as I said, the ones I have were the same as my originals. I didn't search for J-Hooks as Jeff suggested, but I will look again and measure them.