Manual trans swaps: Cheapest vs Easiest vs Best Performing vs Best Driving Experience

I’m in the same boat as the OP, I have thought of doing the switch many times, but the cost has held me back. It would be going behind a big block, which makes it a little more expensive, since I can’t find a big block 833 out of an A body anywhere!
Would not a 23 spline work plenty good for most BB engines?