[jebus2a]

Hello everyone,
I am trying to get info about an engine I have. I bought it about 20 years ago for $500. I thought it was a 1965 260 with 351w heads. I put it in my 67 Fairlane and beat on it.
I took it apart last fall and found out it is a 1964. I'm told that the 65 260 and the 64 hipo 289 share the same block number-C4OE-6015. It has a 4" bore so I think it is the 289.
I would appreciate any help to be sure.
If it's from an old AC-Cobra, I think it should go back into one.