This is the style that is a mini u bolt with a nut on the end? Right around 67 they also went with the style that has a strap with bolt and the yokes have threads in them.
If it's u-bolt style, I think Motormite (Help) has them. I can try to look later.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
your local auto parts store should have them, I am sure I have seen them at Canadian tire in the help section also, Good Luck! sounds like you are just about ready to drive it ?
Yup, most auto parts places should help you out with those. I am not sure but I think GM had two different cup diameters with that U bolt style so make sure you have a sample along of the U joint you want to use it on.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars