I believe the question for you is, how will the sonic test be after boring to remove the pitting?

T/A blocks are not falling out of trees. Especially if the car it belongs to still exists.

In this age of custom pistons any bore size is available as long as rings exist for the size. Meaning if it needed to go 0.017 over there's no reason to go another 0.020. 4.117? Easy as asking Summit...https://www.summitracing.com/parts/slp-e-297x60/overview/

R.