I have a 1974 CE block in my car. Dan Vasic along with a lot of other people have discussed this. We cannot confirm it but the motor in my car "could" have been a replacement.
The car only has 40k miles on it and it was built the 3rd week in June of 1969 which would take it to at least June of 1974 so it could still have been in the warranty window.
So I would think Jason's block would be perfect for Donnie's car.
