Ball hone?

I have a cheap motorhome 440 that I was going to build into a stroker. When disassembling it I learned how NOT to remove rusted water pump housing bolts, and broke the block. I believe it’s usable, but I don’t want to put a lot of money into now.
I’m thinking about just putting some pistons, bearings, and a cam in it now, maybe not even pistons.
The cylinders do not have any cross hatching left and there’s a slight ridge in the tops of the cylinders where the top ring stops. The ridge can be felt with a fingernail, but isn’t big enough to catch a fingernail on, if that makes sense.
Never used a ball hone before but figured this would be a good time to try it. How would you do it?

I’m not interested in “fixing” the broken part of the block.
IMG_4460.jpeg