Q’s for my Fellow Mopar Brothers

Ok, I am in the process of moving in the spring perches on my 68 Valiant Signet. I will be shortening an 8.75 rear to fit a set of N50/15s. My Q's is what gear ratio would be best with my /6 and tire size combo. With auto set up? It will be an everyday cruiser with a possible turbo added later. I have a 741 case with a 3.91 suregrip ready to run. but not sure if it's too much gear for the /6. Mahalo for the Help & any and all advice is much appreciated, C

View attachment 1715930687
Author: 63SPF