Stuck block two questions

[corvette8n]

I’m trying to strip down a stuck 221cu in block.

1. I can’t get the 9/16 socket to get onto the connecting rod nuts, is there a special socket, wrench for the job.

2. I need to bust out the pistons but I don’t want to hurt the rods, any particular tool or punch, chisel size I should use or procedure.

Thanks