Could be but all the information I saw made no mention of V8's coming with 9" brakes. Show us some factory information if it is possible. We are still discussing the possibilities. I looked at 66 because that's what I have maybe there was a change between 65 and 66.
It is on my build sheet . I am not in a position to dig the sheet out as I have moved since finding it. It would take me days to find it and I am not even going to try.