65 barracuda bolt pattern

I just picked up a 65 Formula S. A couple of the wheel studs are broken on the driver side, anyone know what size these studs are so I can swap them out?

My 66 uses 7/16-20. I'm pretty sure 65 used the same.

They were probably broken off when someone tried to remove them they way you would remove most lug nuts. Righty tighty, lefty loosey. The only problem is the factory put left hand threads on the driver's side. So, they work opposite.