Hi Tom,
Perhaps an alternative thought, but I installed the Mopar spring relocation kit on my '64 Fury. This enabled 29x11.5-15 tires using 8.5" wide Center Line wheels that have a 4.875" backspace. These pics are a bit old but it will give you a view of the result. I am really happy with how nicely everything tucked-in under the car.
Thank you,
Jim