I have a soft spot in my heart for Valiant 2 dr.post cars. I actually tried to order one new in January 1969. If it ever own another A body it will be a 1969 2 dr. post. My twin brother and I also had a 1964 Valiant with the same drive train as your '65 Cuda. I can tell you fro personal experience just how weak the 7.25 rear end really is, I think that we shelled three sets of spider gears.