Yes, tooth vs. non-tooth are interchangeable.

If you know what you're looking at, it's very easy to notice the difference.

The newer non-tooth design is a more durable design. The pins in the swiveling part do get sloppy, but not as quickly as the teeth mesh gets loose on the tooth style.

One point worth mentioning is that the '71-4 B-body hinge will bolt up to an E-body, but has a shorter vertical adjustment slot in the base and a slightly different shaped base, so getting proper hood alignment can be a problem.