Saving a 71 340 for my V24 Duster

Wow, she cleaned up nice. I recently saved a 66 440 block that was full of water. It was in a 71 roadrunner with an air grabber and apparently water was getting in through the air grabber. The valley pan rusted through and filled the engine with water.
I ended up boring the engine out and two holes needed sleeves. How are the bores in the 340?