What 8.25 rear axle fits my 1964 Dodge Dart best?

Hi there,

it seems my 7.25 diff is shot and there are just no replacement parts. Next to that, i replaced the 273 in my car for a 318 and it would be better to replace the complete rear axle for one with a 8.25 diff. Which is the one to go looking for?
Click on the Forum title "Transmission and Drivetrain Tech. All the threads in yellow are called "stickys" and stay at the top of the list at all times. There is a rear axle chart there.