1965 Baracuda parts find

Found a guy somewhat locally here to Austin that has some 1965 Baracuda parts for sale, much of which I can use for my '65 Valiant. What I'm really curious about is the rear end....This particular rear assembly came from a '65 Baracuda with an automatic and 225/6. Any ideas as to what gearing, and/or SIZE, that rear may be? What to look for, etc....I'm goin to try to get out there in the next couple days to take a look and make an offer IF I can use the stuff....

Wayne
Austin, TX

Wayne! I need some mint or preferable NOS Goodyear Power Cushion 7.00x13 blackwall. White wall might work too. Could you check it for me I would be very greatful.