Yes, as 389 stated, I'm curious as to why you'd want to do this. 57-64 9.3" Olds-Pontiac rear parts aren't cheap but can be found, and you'll have a rear stronger than a Ford 9". Even the stock 31 spline axle shafts are stronger than Chevy 30 spline.
https://www.markwilliams.com/axles-schmaxles.html