66 Cuda- anyone move their axle back? Best method?

Currently swapping the existing 7-1/4 to an 8-3/4. Wondering if there is any benefit to centering the axle in the wheel opening to get a taller tire in there. Worthwhile, or not? Is there a good method to do so? Yes, this is my first A body.
This thread may help. There is more discussion here about the subject. Use the search function.

https://www.forabodiesonly.com/mopar/threads/moving-rear-axle-back.438341/